Year | Value | 2022 | 52,023 | 2021 | 53,304 | 2020 | 54,338 | 2019 | 55,063 | 2018 | 55,311 | 2017 | 55,181 | 2016 | 55,008 | 2015 | 54,874 | 2014 | 54,588 | 2013 | 54,129 | 2012 | 53,572 | 2011 | 52,850 | 2010 | 51,916 | 2009 | 50,751 | 2008 | 49,463 | 2007 | 47,951 | 2006 | 46,240 | 2005 | 44,594 | 2004 | 43,097 | 2003 | 41,680 | 2002 | 40,392 | 2001 | 39,347 | 2000 | 38,562 | 1999 | 37,998 | 1998 | 37,618 | 1997 | 37,336 | 1996 | 36,872 | 1995 | 36,210 | 1994 | 37,622 | 1993 | 39,133 | 1992 | 38,042 | 1991 | 36,228 | 1990 | 34,321 | 1989 | 33,106 | 1988 | 31,505 | 1987 | 29,467 | 1986 | 28,146 | 1985 | 26,946 | 1984 | 25,983 | 1983 | 25,277 | 1982 | 24,672 | 1981 | 24,322 | 1980 | 24,045 | 1979 | 23,586 | 1978 | 22,926 | 1977 | 22,107 | 1976 | 21,175 | 1975 | 20,093 | 1974 | 18,981 | 1973 | 18,007 | 1972 | 17,158 | 1971 | 16,347 | 1970 | 15,619 | 1969 | 14,990 | 1968 | 14,469 | 1967 | 14,037 | 1966 | 13,678 | 1965 | 13,370 | 1964 | 13,100 | 1963 | 12,868 | 1962 | 12,653 | 1961 | 12,449 | 1960 | 12,260 |
|