Year | Value | 2022 | 61,385 | 2021 | 60,776 | 2020 | 60,493 | 2019 | 60,899 | 2018 | 61,239 | 2017 | 60,517 | 2016 | 59,204 | 2015 | 57,535 | 2014 | 55,671 | 2013 | 53,715 | 2012 | 51,782 | 2011 | 49,963 | 2010 | 48,265 | 2009 | 46,703 | 2008 | 45,326 | 2007 | 44,126 | 2006 | 43,018 | 2005 | 41,886 | 2004 | 40,789 | 2003 | 39,755 | 2002 | 38,740 | 2001 | 37,797 | 2000 | 36,939 | 1999 | 36,168 | 1998 | 35,490 | 1997 | 34,909 | 1996 | 34,414 | 1995 | 33,992 | 1994 | 33,646 | 1993 | 33,099 | 1992 | 32,463 | 1991 | 31,971 | 1990 | 31,447 | 1989 | 30,898 | 1988 | 30,322 | 1987 | 29,734 | 1986 | 29,182 | 1985 | 28,705 | 1984 | 28,294 | 1983 | 27,942 | 1982 | 27,645 | 1981 | 27,362 | 1980 | 27,055 | 1979 | 26,724 | 1978 | 26,366 | 1977 | 26,014 | 1976 | 25,740 | 1975 | 25,575 | 1974 | 25,511 | 1973 | 25,545 | 1972 | 25,636 | 1971 | 25,686 | 1970 | 25,637 | 1969 | 25,494 | 1968 | 25,235 | 1967 | 24,888 | 1966 | 24,555 | 1965 | 24,296 | 1964 | 24,105 | 1963 | 23,973 | 1962 | 23,910 | 1961 | 23,888 | 1960 | 23,876 |
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