| Year | Value | | 2022 | 92,267 | | 2021 | 81,884 | | 2020 | 74,995 | | 2019 | 72,014 | | 2018 | 71,618 | | 2017 | 72,796 | | 2016 | 73,956 | | 2015 | 74,088 | | 2014 | 73,094 | | 2013 | 71,021 | | 2012 | 68,343 | | 2011 | 65,993 | | 2010 | 64,514 | | 2009 | 63,460 | | 2008 | 62,313 | | 2007 | 61,618 | | 2006 | 60,629 | | 2005 | 59,508 | | 2004 | 58,447 | | 2003 | 57,834 | | 2002 | 57,631 | | 2001 | 57,363 | | 2000 | 56,792 | | 1999 | 55,555 | | 1998 | 53,390 | | 1997 | 50,327 | | 1996 | 46,653 | | 1995 | 43,060 | | 1994 | 40,294 | | 1993 | 39,221 | | 1992 | 39,845 | | 1991 | 41,047 | | 1990 | 41,208 | | 1989 | 41,941 | | 1988 | 42,547 | | 1987 | 42,548 | | 1986 | 41,914 | | 1985 | 40,587 | | 1984 | 38,585 | | 1983 | 36,498 | | 1982 | 34,191 | | 1981 | 32,046 | | 1980 | 30,112 | | 1979 | 28,294 | | 1978 | 26,649 | | 1977 | 25,260 | | 1976 | 23,849 | | 1975 | 22,387 | | 1974 | 20,873 | | 1973 | 19,198 | | 1972 | 17,411 | | 1971 | 16,177 | | 1970 | 15,208 | | 1969 | 14,491 | | 1968 | 14,057 | | 1967 | 13,768 | | 1966 | 13,108 | | 1965 | 12,531 | | 1964 | 11,676 | | 1963 | 10,661 | | 1962 | 9,640 | | 1961 | 8,604 | | 1960 | 7,896 |
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