date of sterilization  age 10 - 19  age 20 - 29  age 30 - 39  age 40 - 49  age 50 - 59  age unknown  total
0   jan 1929 - jun 1935           87           87           42            4            2            1    223
1   jul 1935 - jun 1940          380          205          112           11            1            0    709
2   jul 1940 - jun 1950          727          593          249           36            0            1   1606
3   jul 1950 - jun 1960          936         1201          745           93            8            0   2983
4   jul 1960 - dec 1968          686          717          260           23            1            0   1687
5   jan 1969 - dec 1974          174          118           26            2            0            0    320

Table as JSON:
{"date of sterilization":{"0":"jan 1929 - jun 1935","1":"jul 1935 - jun 1940","2":"jul 1940 - jun 1950","3":"jul 1950 - jun 1960","4":"jul 1960 - dec 1968","5":"jan 1969 - dec 1974"},"age 10 - 19":{"0":87,"1":380,"2":727,"3":936,"4":686,"5":174},"age 20 - 29":{"0":87,"1":205,"2":593,"3":1201,"4":717,"5":118},"age 30 - 39":{"0":42,"1":112,"2":249,"3":745,"4":260,"5":26},"age 40 - 49":{"0":4,"1":11,"2":36,"3":93,"4":23,"5":2},"age 50 - 59":{"0":2,"1":1,"2":0,"3":8,"4":1,"5":0},"age unknown":{"0":1,"1":0,"2":1,"3":0,"4":0,"5":0},"total":{"0":223,"1":709,"2":1606,"3":2983,"4":1687,"5":320}}