Year | Value | 2022 | 60,266 | 2021 | 55,971 | 2020 | 50,792 | 2019 | 44,414 | 2018 | 37,874 | 2017 | 33,002 | 2016 | 31,562 | 2015 | 34,627 | 2014 | 41,571 | 2013 | 50,487 | 2012 | 58,783 | 2011 | 63,964 | 2010 | 65,240 | 2009 | 63,493 | 2008 | 60,250 | 2007 | 56,951 | 2006 | 54,445 | 2005 | 53,547 | 2004 | 54,777 | 2003 | 57,017 | 2002 | 58,720 | 2001 | 59,663 | 2000 | 59,716 | 1999 | 58,443 | 1998 | 55,434 | 1997 | 50,701 | 1996 | 44,975 | 1995 | 39,133 | 1994 | 33,772 | 1993 | 29,649 | 1992 | 27,174 | 1991 | 25,736 | 1990 | 25,226 | 1989 | 25,732 | 1988 | 27,151 | 1987 | 29,283 | 1986 | 31,959 | 1985 | 34,470 | 1984 | 35,884 | 1983 | 36,373 | 1982 | 36,234 | 1981 | 35,521 | 1980 | 34,533 | 1979 | 33,498 | 1978 | 32,522 | 1977 | 31,606 | 1976 | 30,437 | 1975 | 28,781 | 1974 | 26,699 | 1973 | 24,294 | 1972 | 21,682 | 1971 | 19,240 | 1970 | 17,216 | 1969 | 15,543 | 1968 | 14,157 | 1967 | 13,187 | 1966 | 12,771 | 1965 | 12,997 | 1964 | 13,891 | 1963 | 15,529 | 1962 | 17,606 | 1961 | 19,456 | 1960 | 20,637 |
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