| statistics for October-September year |
| 1933-1945 statistics missing |
| 1946 | 336 |
| 1947 | 243 |
| 1948 | 242 |
| 1949 | 347 |
| 1950 | 342 |
| 1951 | 625 |
| 1952 | 709 |
| change to January-December year |
| 1953 | 655 |
| 1954 | 770 |
| 1955 | 1,385 |
| 1956 | 1,525 |
| 1957 | 1,705 |
| 1958 | 1,639 |
| 1959 | 8,751 |
| 1960 | 8,755 |
| 1961 | 8,800 |
| 1962 | 9,602 |
| 1963 | 17,250 |
| 1964 | 15,500 |
| 1965 | 31,400 |
| 1966 | 23,300 |
| 1967 | 43,450 |
|
| 1968-1980 statistics missing |
| 1981 | 64,614 |
| 1982 | 52,502 |
| 1983 | 57,817 |
| 1984 | 65,511 |
| 1985 | 79,732 |
| 1986 | 94,513 |
| 1987 | 90,787 |
| 1988 | 93,603 |
| 1989 | 95,049 |
| 1990 | 124,858 |
| 1991 | 148,045 |
| 1992 | 179,543 |
| 1993 | 159,553 |
| 1994 | 166,977 |
| 1995 | 158,175 |
| 1996 | 189,434 |
| 1997 | 188,369 |
| 1998 | 179,108 |
| 1999 | 186,373 |
| 2000 | 212,876 |
|
