Year | Value | 2022 | 71,428 | 2021 | 70,571 | 2020 | 68,065 | 2019 | 63,712 | 2018 | 58,513 | 2017 | 53,693 | 2016 | 49,745 | 2015 | 46,888 | 2014 | 44,181 | 2013 | 39,759 | 2012 | 36,294 | 2011 | 35,543 | 2010 | 35,433 | 2009 | 35,349 | 2008 | 35,065 | 2007 | 34,613 | 2006 | 34,069 | 2005 | 33,581 | 2004 | 33,072 | 2003 | 32,462 | 2002 | 31,849 | 2001 | 31,116 | 2000 | 30,136 | 1999 | 28,988 | 1998 | 27,711 | 1997 | 26,309 | 1996 | 24,769 | 1995 | 23,126 | 1994 | 21,410 | 1993 | 19,556 | 1992 | 17,733 | 1991 | 16,344 | 1990 | 15,647 | 1989 | 15,632 | 1988 | 16,349 | 1987 | 17,574 | 1986 | 18,557 | 1985 | 19,072 | 1984 | 19,261 | 1983 | 19,039 | 1982 | 18,794 | 1981 | 18,464 | 1980 | 17,929 | 1979 | 17,523 | 1978 | 19,267 | 1977 | 21,048 | 1976 | 19,150 | 1975 | 17,251 | 1974 | 16,861 | 1973 | 16,376 | 1972 | 15,899 | 1971 | 15,505 | 1970 | 15,248 | 1969 | 15,106 | 1968 | 15,064 | 1967 | 15,130 | 1966 | 15,157 | 1965 | 15,059 | 1964 | 14,868 | 1963 | 14,546 | 1962 | 14,140 | 1961 | 13,796 | 1960 | 13,612 |
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