Year | Value | 2022 | 53,669 | 2021 | 58,368 | 2020 | 60,066 | 2019 | 61,537 | 2018 | 62,502 | 2017 | 60,788 | 2016 | 56,091 | 2015 | 49,169 | 2014 | 41,112 | 2013 | 34,791 | 2012 | 32,972 | 2011 | 34,501 | 2010 | 37,098 | 2009 | 39,899 | 2008 | 42,143 | 2007 | 43,442 | 2006 | 43,971 | 2005 | 44,357 | 2004 | 44,852 | 2003 | 45,479 | 2002 | 45,834 | 2001 | 45,487 | 2000 | 45,003 | 1999 | 45,110 | 1998 | 45,884 | 1997 | 46,662 | 1996 | 47,016 | 1995 | 46,371 | 1994 | 45,034 | 1993 | 43,242 | 1992 | 41,663 | 1991 | 40,802 | 1990 | 40,455 | 1989 | 39,891 | 1988 | 38,420 | 1987 | 35,943 | 1986 | 33,031 | 1985 | 30,634 | 1984 | 29,442 | 1983 | 29,754 | 1982 | 31,279 | 1981 | 33,207 | 1980 | 34,751 | 1979 | 35,376 | 1978 | 34,944 | 1977 | 33,732 | 1976 | 32,232 | 1975 | 30,849 | 1974 | 29,742 | 1973 | 28,893 | 1972 | 28,299 | 1971 | 27,755 | 1970 | 27,028 | 1969 | 26,043 | 1968 | 24,801 | 1967 | 23,325 | 1966 | 21,759 | 1965 | 20,290 | 1964 | 19,014 | 1963 | 17,938 | 1962 | 17,070 | 1961 | 16,365 | 1960 | 15,808 |
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