Table 1.
Number of enrollees in each age groupa
| Age group (years) | 2013 | 2014 | 2015 | 2016 |
|---|---|---|---|---|
| 0–4 | 300,045 (5·73) | 349,827 (6·71) | 364,043 (7·27) | 378,095 (7·62) |
| 5–9 | 186,265 (3·47) | 199,763 (3·76) | 190,513 (3·58) | 183,465 (3·46) |
| 10–14 | 178,937 (3·09) | 195,988 (3·43) | 185,914 (3·31) | 178,224 (3·23) |
| 15–19 | 181,308 (3·0) | 232,657 (3·87) | 229,207 (3·79) | 229,102 (3·79) |
| 20–24 | 206,669 (3·33) | 301,604 (4·86) | 310,845 (5·10) | 319,438 (5·19) |
| 25–29 | 234,889 (3·42) | 301,904 (4·52) | 301,886 (4·62) | 303,908 (4·75) |
| 30–34 | 254,486 (3·34) | 304,273 (4·08) | 298,905 (4·04) | 297,681 (4·10) |
| 35–39 | 279,942 (3·09) | 319,855 (3·69) | 309,508 (3·68) | 302,943 (3·73) |
| 40–44 | 266,656 (2·76) | 299,446 (3·06) | 288,814 (2·93) | 281,933 (2·90) |
| 45–49 | 219,357 (2·61) | 242,943 (2·82) | 233,439 (2·66) | 227,467 (2·45) |
| 50–54 | 174,821 (2·26) | 198,847 (2·55) | 190,321 (2·37) | 184,999 (2·34) |
| 55–59 | 129,055 (1·67) | 172,490 (2·25) | 164,890 (2·17) | 159,649 (2·12) |
| 60–64 | 107,417 (1·11) | 146,718 (1·63) | 142,367 (1·66) | 138,287 (1·70) |
| Total | 2,719,847 (2·85) | 3,266,315 (3·47) | 3,210,652 (3·44) | 3,185,191 (3·45) |
aValues in parentheses represent the proportion of enrollees of total number of Japanese populations in each age group