Table 1:
(a) USA 1913–1970 | ||
Year | Number | Rate per 100 000 pop. (age-adjusted, base 1940) |
Average of 1913–17 | 6 700 | 7.0 |
Average of 1918–22 | 12 500 | 12.3 |
Average of 1923–7 | 30 900 | 26.4 |
Average of 1928–2 | 21 700 | 19.6 |
Average of 1933–7 | 36 313 | 29.3 |
1943 | 23 823 | 17.7 |
1944 | 24 282 | 18.3 |
1946 | 33 411 | 24.0 |
1949 | 31 701 | 21.5 |
1950 | 34 763 | 23.3 |
1952 | 37 794 | 25.0 |
1955 | 38 426 | 24.6 |
1960 | 38 137 | 22.4 |
1965 | 49 163 | 26.5 |
1970 | 54 633 | 25.3 |
(b) USA 1990–2009 | ||
Year | Number | Rate per 100 000 pop. |
1990 | 44 600 | 17.9 |
1995 | 41 800 | 15.9 |
2000 | 41 900 | 14.9 |
2005 | 43 500 | 14.7 |
2009 | 22 800 | 11.0 |