- 1937 to 1939 38,326
- 1940 to 1944 44,301
- 1945 to 1949 47,327
- 1950 to 1954 50,499
- 1955 to 1959 51,501
- 1960 to 1964 58,629
- 1965 to 1969 72,363
- 1970 to 1974 72,315
- 1975 to 1979 70,291
- 1980 to 1984 64,353
- 1985 to 1989 62,742
- 1990 to 1994 63,281
- 1995 to 1999 54,673
- 2000 to 2001 35,639