Year | Value | 2022 | 57,185 | 2021 | 56,403 | 2020 | 55,534 | 2019 | 54,490 | 2018 | 53,521 | 2017 | 52,718 | 2016 | 51,946 | 2015 | 51,104 | 2014 | 48,998 | 2013 | 44,002 | 2012 | 39,650 | 2011 | 38,108 | 2010 | 37,224 | 2009 | 36,359 | 2008 | 35,322 | 2007 | 34,123 | 2006 | 32,711 | 2005 | 31,265 | 2004 | 29,780 | 2003 | 28,192 | 2002 | 26,584 | 2001 | 24,919 | 2000 | 23,168 | 1999 | 21,341 | 1998 | 19,373 | 1997 | 17,456 | 1996 | 15,989 | 1995 | 15,158 | 1994 | 14,944 | 1993 | 15,414 | 1992 | 16,313 | 1991 | 17,059 | 1990 | 17,364 | 1989 | 17,258 | 1988 | 16,859 | 1987 | 16,232 | 1986 | 15,393 | 1985 | 14,642 | 1984 | 14,096 | 1983 | 13,655 | 1982 | 13,645 | 1981 | 13,673 | 1980 | 13,389 | 1979 | 13,107 | 1978 | 14,376 | 1977 | 15,647 | 1976 | 14,286 | 1975 | 12,966 | 1974 | 12,833 | 1973 | 12,799 | 1972 | 12,841 | 1971 | 12,842 | 1970 | 12,756 | 1969 | 12,596 | 1968 | 12,314 | 1967 | 11,973 | 1966 | 11,679 | 1965 | 11,483 | 1964 | 11,381 | 1963 | 11,357 | 1962 | 11,406 | 1961 | 11,453 | 1960 | 11,460 |
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