| 1913 |
400,000 |
| 1930 |
1,500,000 |
| 1950 |
3,510,000 |
| 1961 |
7,175,000 |
| 1970 |
8,814,000 |
| 1980 |
11,832,000 |
| 1985 |
13,778,000 |
| 1987 |
14,515,000 |
| 1988 |
15,093,000 |
| 1989 |
15,658,000 |
| 1990 |
15,987,000 |
| 1991 |
16,262,000 |
| 1992 |
16,262,000 |
| 1993 |
16,212,000 |
| 1994 |
16,239,000 |
| 1995 |
15,375,000 |
| 1996 |
15,830,000 |
| 1997 |
16,230,000 |
| 1998 |
16,824,000 |
| 1999 |
16,790,500 |
| 2000 |
16,991,140 |
| 2001 |
16,999,400 |
|
