| Year | Rank | +/- | Quantity | |
|---|---|---|---|---|
| 2010 | #61 | -8 | 7,097 | |
| 2009 | #53 | -6 | 8,036 | |
| 2008 | #47 | -5 | 9,195 | |
| 2007 | #42 | -9 | 10,198 | |
| 2006 | #33 | -4 | 10,986 | |
| 2005 | #29 | -3 | 12,273 | |
| 2004 | #26 | -6 | 13,701 | |
| 2003 | #20 | -1 | 15,534 | |
| 2002 | #19 | -3 | 16,617 | |
| 2001 | #16 | -1 | 18,181 | |
| 2000 | #15 | +2 | 19,845 | |
| 1999 | #17 | -1 | 19,977 | |
| 1998 | #16 | -3 | 20,573 | |
| 1997 | #13 | +1 | 21,924 | |
| 1996 | #14 | 0 | 22,362 | |
| 1995 | #14 | -2 | 23,131 | |
| 1994 | #12 | +3 | 25,126 | |
| 1993 | #15 | +1 | 25,531 | |
| 1992 | #16 | +6 | 24,795 | |
| 1991 | #22 | 0 | 21,382 | |
| 1990 | #22 | +3 | 20,424 | |
| 1989 | #25 | +3 | 18,072 | |
| 1988 | #28 | +5 | 15,855 | |
| 1987 | #33 | +5 | 13,196 | |
| 1986 | #38 | +1 | 11,716 | |
| 1985 | #39 | +6 | 11,340 | |
| 1984 | #45 | +5 | 9,060 | |
| 1983 | #50 | +5 | 7,294 | |
| 1982 | #55 | +8 | 6,140 | |
| 1981 | #63 | +9 | 4,836 | |
| 1980 | #72 | +2 | 4,235 | |
| 1979 | #74 | +16 | 4,157 | |
| 1978 | #90 | +5 | 3,128 | |
| 1977 | #95 | +1 | 2,775 | |
| 1976 | #96 | +50 | 2,647 | |
| 1975 | #146 | +33 | 1,683 | |
| 1974 | #179 | +17 | 1,274 | |
| 1973 | #196 | +25 | 1,136 | |
| 1972 | #221 | +68 | 1,001 | |
| 1971 | #289 | +53 | 704 | |
| 1970 | #342 | +40 | 556 | |
| 1969 | #382 | +33 | 420 | |
| 1968 | #415 | -10 | 342 | |
| 1967 | #405 | +9 | 360 | |
| 1966 | #414 | +23 | 335 | |
| 1965 | #437 | 0 | 311 | |
| 1964 | #437 | +3 | 336 | |
| 1963 | #440 | -8 | 327 | |
| 1962 | #432 | -18 | 342 | |
| 1961 | #414 | +20 | 367 | |
| 1960 | #434 | +51 | 344 | |
| 1959 | #485 | +18 | 262 | |
| 1958 | #503 | -49 | 236 | |
| 1957 | #454 | +5 | 290 | |
| 1956 | #459 | -16 | 273 | |
| 1955 | #443 | +72 | 281 | |
| 1954 | #515 | +37 | 199 | |
| 1953 | #552 | -13 | 164 | |
| 1952 | #539 | +19 | 172 | |
| 1951 | #558 | -4 | 151 | |
| 1950 | #554 | +112 | 150 | |
| 1949 | #666 | +36 | 107 | |
| 1948 | #702 | +133 | 91 | |
| 1947 | #835 | +132 | 70 | |
| 1946 | #967 | 49 | ||
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