Year | Value | 2022 | 53,044 | 2021 | 52,536 | 2020 | 52,050 | 2019 | 51,497 | 2018 | 51,104 | 2017 | 50,583 | 2016 | 50,089 | 2015 | 49,752 | 2014 | 49,529 | 2013 | 49,389 | 2012 | 49,295 | 2011 | 49,212 | 2010 | 49,132 | 2009 | 49,076 | 2008 | 49,054 | 2007 | 49,052 | 2006 | 49,045 | 2005 | 49,005 | 2004 | 48,908 | 2003 | 48,761 | 2002 | 48,550 | 2001 | 48,242 | 2000 | 47,823 | 1999 | 47,291 | 1998 | 46,640 | 1997 | 45,857 | 1996 | 44,936 | 1995 | 43,888 | 1994 | 42,723 | 1993 | 41,420 | 1992 | 40,129 | 1991 | 39,132 | 1990 | 38,567 | 1989 | 38,425 | 1988 | 38,748 | 1987 | 39,359 | 1986 | 39,818 | 1985 | 39,877 | 1984 | 39,554 | 1983 | 38,833 | 1982 | 37,800 | 1981 | 36,790 | 1980 | 35,984 | 1979 | 35,357 | 1978 | 34,920 | 1977 | 34,648 | 1976 | 34,349 | 1975 | 33,937 | 1974 | 33,433 | 1973 | 32,805 | 1972 | 32,064 | 1971 | 31,323 | 1970 | 30,645 | 1969 | 30,010 | 1968 | 29,415 | 1967 | 28,879 | 1966 | 28,368 | 1965 | 27,864 | 1964 | 27,387 | 1963 | 26,946 | 1962 | 26,545 | 1961 | 26,190 | 1960 | 25,880 |
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