Year | Value | 2022 | 47,429 | 2021 | 45,493 | 2020 | 43,659 | 2019 | 42,025 | 2018 | 40,677 | 2017 | 39,568 | 2016 | 38,547 | 2015 | 37,661 | 2014 | 36,915 | 2013 | 36,230 | 2012 | 35,651 | 2011 | 35,246 | 2010 | 35,004 | 2009 | 34,905 | 2008 | 34,942 | 2007 | 34,614 | 2006 | 34,368 | 2005 | 34,501 | 2004 | 34,409 | 2003 | 34,029 | 2002 | 33,330 | 2001 | 32,356 | 2000 | 31,185 | 1999 | 30,890 | 1998 | 31,463 | 1997 | 31,898 | 1996 | 32,430 | 1995 | 33,247 | 1994 | 33,247 | 1993 | 32,613 | 1992 | 32,525 | 1991 | 32,726 | 1990 | 32,977 | 1989 | 33,215 | 1988 | 33,410 | 1987 | 33,557 | 1986 | 33,767 | 1985 | 33,839 | 1984 | 33,553 | 1983 | 33,055 | 1982 | 32,394 | 1981 | 31,551 | 1980 | 30,534 | 1979 | 29,403 | 1978 | 28,229 | 1977 | 27,040 | 1976 | 25,756 | 1975 | 24,283 | 1974 | 22,719 | 1973 | 21,240 | 1972 | 19,902 | 1971 | 18,704 | 1970 | 17,629 | 1969 | 16,653 | 1968 | 15,750 | 1967 | 14,902 | 1966 | 13,947 | 1965 | 13,001 | 1964 | 12,253 | 1963 | 11,570 | 1962 | 10,906 | 1961 | 10,269 | 1960 | 9,664 |
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