Year | Value | 2022 | 56,275 | 2021 | 56,360 | 2020 | 56,425 | 2019 | 56,473 | 2018 | 56,512 | 2017 | 56,522 | 2016 | 56,516 | 2015 | 56,504 | 2014 | 56,498 | 2013 | 56,512 | 2012 | 56,537 | 2011 | 56,548 | 2010 | 56,560 | 2009 | 56,549 | 2008 | 56,507 | 2007 | 56,467 | 2006 | 56,492 | 2005 | 56,555 | 2004 | 56,593 | 2003 | 56,652 | 2002 | 56,692 | 2001 | 56,744 | 2000 | 56,755 | 1999 | 56,628 | 1998 | 56,489 | 1997 | 56,287 | 1996 | 56,048 | 1995 | 55,802 | 1994 | 55,447 | 1993 | 54,983 | 1992 | 54,456 | 1991 | 53,899 | 1990 | 53,452 | 1989 | 52,028 | 1988 | 52,074 | 1987 | 52,144 | 1986 | 52,205 | 1985 | 52,242 | 1984 | 52,221 | 1983 | 52,144 | 1982 | 52,044 | 1981 | 51,965 | 1980 | 51,885 | 1979 | 50,017 | 1978 | 49,696 | 1977 | 48,096 | 1976 | 49,429 | 1975 | 48,364 | 1974 | 45,844 | 1973 | 42,694 | 1972 | 38,546 | 1971 | 35,630 | 1970 | 31,786 | 1969 | 30,167 | 1968 | 27,798 | 1967 | 24,435 | 1966 | 22,924 | 1965 | 21,516 | 1964 | 20,126 | 1963 | 19,588 | 1962 | 17,182 | 1961 | 16,789 | 1960 | 16,128 |
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