Year | Value | 2022 | 56,536 | 2021 | 57,934 | 2020 | 57,260 | 2019 | 55,705 | 2018 | 54,316 | 2017 | 53,488 | 2016 | 52,707 | 2015 | 51,856 | 2014 | 50,939 | 2013 | 49,978 | 2012 | 48,899 | 2011 | 47,513 | 2010 | 46,321 | 2009 | 44,973 | 2008 | 43,386 | 2007 | 42,068 | 2006 | 40,772 | 2005 | 39,709 | 2004 | 38,563 | 2003 | 36,795 | 2002 | 34,662 | 2001 | 32,469 | 2000 | 30,833 | 1999 | 29,559 | 1998 | 29,921 | 1997 | 32,159 | 1996 | 34,444 | 1995 | 36,242 | 1994 | 36,356 | 1993 | 35,430 | 1992 | 34,635 | 1991 | 34,060 | 1990 | 33,564 | 1989 | 32,662 | 1988 | 31,439 | 1987 | 30,210 | 1986 | 29,481 | 1985 | 29,066 | 1984 | 28,401 | 1983 | 27,824 | 1982 | 27,296 | 1981 | 26,450 | 1980 | 25,485 | 1979 | 24,449 | 1978 | 23,390 | 1977 | 22,528 | 1976 | 21,621 | 1975 | 20,541 | 1974 | 19,610 | 1973 | 18,931 | 1972 | 18,458 | 1971 | 18,172 | 1970 | 18,163 | 1969 | 18,122 | 1968 | 17,795 | 1967 | 17,386 | 1966 | 17,089 | 1965 | 16,950 | 1964 | 16,635 | 1963 | 16,224 | 1962 | 15,987 | 1961 | 15,703 | 1960 | 15,130 |
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