For this type of tables, the flexmat program is ideal. If you need such tables on frequent basis, you can create a custom template and use it conveniently. Below I show how to make this table piece by piece , using various functionalities of flexmat. Please do update asdocx before using the following solution.
* To update asdocx asdocx_update
clear
input str21 prod str7 Country float(ym rel_px)
"Allitems" "Ireland" 648 34.88717
"Allitems" "Ireland" 649 26.68857
"Allitems" "Ireland" 650 13.66463
"Allitems" "Ireland" 651 2.855687
"Allitems" "Ireland" 652 86.89333
"Allitems" "Ireland" 653 35.08549
"Allitems" "Ireland" 654 7.110509
"Allitems" "Ireland" 655 32.336796
"Allitems" "Ireland" 656 55.51031
"Allitems" "Ireland" 657 87.5991
"Allitems" "Ireland" 658 20.47095
"Allitems" "Ireland" 659 89.27587
"Allitems" "Ireland" 660 58.44658
"Allitems" "Ireland" 661 36.977913
"Allitems" "Ireland" 662 85.06309
"Allitems" "Ireland" 663 39.13819
"Allitems" "Ireland" 664 11.96613
"Allitems" "Ireland" 665 75.42434
"Allitems" "Ireland" 666 69.502335
"Allitems" "Ireland" 667 68.66152
"Allitems" "Ireland" 668 93.19346
"Allitems" "Ireland" 669 45.48882
"Allitems" "Ireland" 670 6.74011
"Allitems" "Ireland" 671 33.79889
"Allitems" "Ireland" 672 97.48848
"Allitems" "Ireland" 673 72.64384
"Allitems" "Ireland" 674 4.5415115
"Allitems" "Ireland" 675 74.596664
"Allitems" "Ireland" 676 49.61259
"Allitems" "Ireland" 677 71.671616
"Allitems" "Ireland" 678 85.97421
"Allitems" "Ireland" 679 13.407556
"Allitems" "Ireland" 680 48.84418
"Allitems" "Ireland" 681 87.12188
"Allitems" "Ireland" 682 76.64684
"Allitems" "Ireland" 683 25.125553
"Allitems" "Ireland" 684 16.636478
"Allitems" "Ireland" 685 74.379585
"Allitems" "Ireland" 686 98.05113
"Allitems" "Ireland" 687 72.95772
"Allitems" "Ireland" 688 90.11049
"Allitems" "Ireland" 689 26.436493
"Allitems" "Ireland" 690 88.56509
"Allitems" "Ireland" 691 88.2112
"Allitems" "Ireland" 692 74.893295
"Allitems" "Ireland" 693 91.96262
"Allitems" "Ireland" 694 69.34533
"Allitems" "Ireland" 695 21.54026
"Allitems" "Ireland" 696 82.85889
"Allitems" "Ireland" 697 4.4215355
"Allitems" "Ireland" 698 86.30377
"Allitems" "Ireland" 699 35.260456
"Allitems" "Ireland" 700 77.20399
"Allitems" "Ireland" 701 58.61199
"Allitems" "Ireland" 702 32.277664
"Allitems" "Ireland" 703 17.293066
"Allitems" "Ireland" 704 80.53645
"Allitems" "Ireland" 705 30.60019
"Allitems" "Ireland" 706 21.90997
"Allitems" "Ireland" 707 72.4731
"Allitems" "Ireland" 708 69.64866
"Allitems" "Ireland" 709 91.19344
"Allitems" "Ireland" 710 67.956345
"Allitems" "Ireland" 711 35.49416
"Allitems" "Ireland" 712 73.897
"Allitems" "Ireland" 713 18.740166
"Allitems" "Ireland" 714 31.46128
"Allitems" "Ireland" 715 13.75693
"Allitems" "Ireland" 716 65.37739
"Allitems" "Ireland" 717 27.013193
"Allitems" "Ireland" 718 89.98394
"Allitems" "Ireland" 719 57.34232
"Allitems" "Ireland" 720 11.147037
"Allitems" "Ireland" 721 41.45227
"Allitems" "Ireland" 722 .3052204
"Allitems" "Ireland" 723 66.59978
"Allitems" "Ireland" 724 34.628757
"Allitems" "Ireland" 725 7.802349
"Allitems" "Ireland" 726 12.758135
"Allitems" "Ireland" 727 22.97006
"Allitems" "Ireland" 728 32.955467
"Bread" "Ireland" 648 41.44089
"Bread" "Ireland" 649 3.608474
"Bread" "Ireland" 650 8.438108
"Bread" "Ireland" 651 .9876246
"Bread" "Ireland" 652 32.00437
"Bread" "Ireland" 653 .51969653
"Bread" "Ireland" 654 22.754347
"Bread" "Ireland" 655 85.1468
"Bread" "Ireland" 656 98.20066
"Bread" "Ireland" 657 3.2479186
"Bread" "Ireland" 658 98.74847
"Bread" "Ireland" 659 89.41061
"Bread" "Ireland" 660 96.84734
"Bread" "Ireland" 661 23.92203
"Bread" "Ireland" 662 69.27336
"Bread" "Ireland" 663 48.84359
"Bread" "Ireland" 664 43.76452
"Bread" "Ireland" 665 58.58005
"Bread" "Ireland" 666 37.870922
"Bread" "Ireland" 666 37.870922
"Allitems" "Ireland" 648 68.80603
"Allitems" "England" 649 97.94578
"Allitems" "England" 650 67.01937
"Allitems" "England" 651 59.48808
"Allitems" "England" 652 79.70892
"Allitems" "England" 653 78.35854
"Allitems" "England" 654 65.46342
"Allitems" "England" 655 9.688908
"Allitems" "England" 656 68.850586
"Allitems" "England" 657 87.2496
"Allitems" "England" 658 52.96353
"Allitems" "England" 659 83.02209
"Allitems" "England" 660 93.39853
"Allitems" "England" 661 17.498913
"Allitems" "England" 662 55.36171
"Allitems" "England" 663 53.46152
"Allitems" "England" 664 77.67793
"Allitems" "England" 665 12.88747
"Allitems" "England" 666 27.75184
"Allitems" "England" 667 42.42016
"Allitems" "England" 668 13.590055
"Allitems" "England" 669 33.25624
"Allitems" "England" 670 46.75523
"Allitems" "England" 671 51.60881
"Allitems" "England" 672 6.694305
"Allitems" "England" 673 7.229638
"Allitems" "England" 674 68.17465
"Allitems" "England" 675 8.804953
"Allitems" "England" 676 13.270818
"Allitems" "England" 677 87.45816
"Allitems" "England" 678 24.68877
"Allitems" "England" 679 4.3254995
"Allitems" "England" 680 37.644367
"Allitems" "England" 681 76.77862
"Allitems" "England" 682 75.513664
"Allitems" "England" 683 44.76189
"Allitems" "England" 684 40.87105
"Allitems" "England" 685 29.777426
"Allitems" "England" 686 67.94177
"Allitems" "England" 687 71.24024
"Allitems" "England" 688 56.62265
"Allitems" "England" 689 17.783249
"Allitems" "England" 690 11.399897
"Allitems" "England" 691 59.55869
"Allitems" "England" 692 62.51604
"Allitems" "England" 693 63.48989
"Allitems" "England" 694 99.44572
"Allitems" "England" 695 74.976776
"Allitems" "England" 696 17.367882
"Allitems" "England" 697 61.07705
"Allitems" "England" 698 57.54215
"Allitems" "England" 699 36.781612
"Allitems" "England" 700 30.052456
"Allitems" "England" 701 .7538024
"Allitems" "England" 702 67.01369
"Allitems" "England" 703 42.41406
"Allitems" "England" 704 95.37622
"Allitems" "England" 705 8.674778
"Allitems" "England" 706 89.49648
"Allitems" "England" 707 58.90286
"Allitems" "England" 708 40.05832
"Allitems" "England" 709 66.54901
"Allitems" "England" 710 41.98386
"Allitems" "England" 711 74.720535
"Allitems" "England" 712 71.901436
"Allitems" "England" 713 84.64647
"Allitems" "England" 714 79.08313
"Allitems" "England" 715 19.002222
"Allitems" "England" 716 38.69604
"Allitems" "England" 717 23.871336
"Allitems" "England" 718 34.470016
"Allitems" "England" 719 77.95682
"Allitems" "England" 720 74.843956
"Allitems" "England" 721 23.037836
"Allitems" "England" 722 16.770323
"Allitems" "England" 723 91.80508
"Allitems" "England" 724 31.38996
"Allitems" "England" 725 90.19141
"Allitems" "England" 726 7.740517
"Allitems" "England" 727 63.41382
"Allitems" "England" 728 81.47295
"Bread" "England" 648 87.88922
"Bread" "England" 649 2.599352
"Bread" "England" 650 17.993002
"Bread" "England" 651 57.78895
"Bread" "England" 652 40.81415
"Bread" "England" 653 61.55495
"Bread" "England" 654 17.457695
"Bread" "England" 655 36.176464
"Bread" "England" 656 13.38996
"Bread" "England" 657 .1363096
"Bread" "England" 658 25.710005
"Bread" "England" 659 65.17417
"Bread" "England" 660 92.52081
"Bread" "England" 661 82.33367
"Bread" "England" 662 92.29402
"Bread" "England" 663 74.80426
"Bread" "England" 664 52.14148
"Bread" "England" 665 40.22151
end
format %tm ym
And now the code to generate the table
* Make first part of the table
asdocx tabulate prod if Country=="Ireland" & ym<676, summarize(rel_px) replace
* Run the command again for sub sample of England
asdocx tabulate prod if Country=="England" & ym<676, summarize(rel_px)
* Append this second table to the right of the first, deleting the row names
flexmat addmat, matname(output) right norownames
* Delect the second table
flexmat droploc, loc(2)
* Make the third part of the table
asdocx tabulate prod if Country=="Ireland" & ym>=676, summarize(rel_px)
* Append this new table below the main table
flexmat addmat, matname(output) below
flexmat droploc, loc(2)
asdocx tabulate prod if Country=="England" & ym>=676, summarize(rel_px)
flexmat addmat, matname(output) row(4) col(5) norownames
flexmat droploc, loc(2)
* Add super row
flexmat addrow, data(\hmerge_7 Post-Tax) above
* Add sub row
flexmat insertrow, data(\hmerge_3 England) row(2)
flexmat addrow, data(\hmerge_4 Ireland) row(2) col(5)
* Panel seperator
flexmat insertrow, data(\hmerge_7 Post-Tax) row(6)
asdocx exportflex
