| Year | Value | | 2022 | 175,385 | | 2021 | 162,963 | | 2020 | 161,093 | | 2019 | 151,282 | | 2018 | 138,109 | | 2017 | 125,208 | | 2016 | 112,953 | | 2015 | 101,912 | | 2014 | 94,819 | | 2013 | 88,738 | | 2012 | 81,417 | | 2011 | 72,540 | | 2010 | 64,466 | | 2009 | 59,910 | | 2008 | 58,305 | | 2007 | 57,098 | | 2006 | 56,825 | | 2005 | 56,770 | | 2004 | 56,770 | | 2003 | 56,595 | | 2002 | 56,603 | | 2001 | 54,290 | | 2000 | 51,227 | | 1999 | 49,645 | | 1998 | 49,070 | | 1997 | 47,123 | | 1996 | 44,933 | | 1995 | 42,142 | | 1994 | 39,772 | | 1993 | 37,591 | | 1992 | 35,825 | | 1991 | 34,041 | | 1990 | 32,506 | | 1989 | 30,925 | | 1988 | 29,990 | | 1987 | 29,425 | | 1986 | 29,269 | | 1985 | 29,553 | | 1984 | 29,594 | | 1983 | 28,988 | | 1982 | 28,591 | | 1981 | 27,469 | | 1980 | 26,299 | | 1979 | 25,838 | | 1978 | 25,084 | | 1977 | 24,132 | | 1976 | 22,943 | | 1975 | 21,695 | | 1974 | 20,558 | | 1973 | 19,538 | | 1972 | 18,595 | | 1971 | 17,780 | | 1970 | 17,000 | | 1969 | 16,129 | | 1968 | 15,205 | | 1967 | 14,354 | | 1966 | 13,488 | | 1965 | 12,601 | | 1964 | 11,713 | | 1963 | 10,706 | | 1962 | 9,636 | | 1961 | 8,638 | | 1960 | 7,769 |
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