Year | Value | 2022 | 44,671 | 2021 | 45,841 | 2020 | 46,519 | 2019 | 46,967 | 2018 | 46,985 | 2017 | 46,784 | 2016 | 46,935 | 2015 | 47,255 | 2014 | 47,637 | 2013 | 48,653 | 2012 | 49,996 | 2011 | 50,852 | 2010 | 51,438 | 2009 | 51,531 | 2008 | 50,898 | 2007 | 49,794 | 2006 | 48,665 | 2005 | 47,777 | 2004 | 47,271 | 2003 | 47,459 | 2002 | 48,282 | 2001 | 49,750 | 2000 | 51,460 | 1999 | 53,086 | 1998 | 54,333 | 1997 | 55,163 | 1996 | 55,179 | 1995 | 54,610 | 1994 | 53,609 | 1993 | 52,022 | 1992 | 50,451 | 1991 | 48,936 | 1990 | 47,972 | 1989 | 47,768 | 1988 | 48,048 | 1987 | 49,023 | 1986 | 50,732 | 1985 | 52,987 | 1984 | 55,429 | 1983 | 57,436 | 1982 | 58,729 | 1981 | 58,996 | 1980 | 58,441 | 1979 | 57,349 | 1978 | 56,084 | 1977 | 55,139 | 1976 | 54,212 | 1975 | 53,448 | 1974 | 52,781 | 1973 | 52,159 | 1972 | 51,345 | 1971 | 50,145 | 1970 | 48,681 | 1969 | 47,072 | 1968 | 45,274 | 1967 | 43,219 | 1966 | 40,962 | 1965 | 38,655 | 1964 | 36,371 | 1963 | 34,144 | 1962 | 32,549 | 1961 | 31,783 | 1960 | 31,498 |
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