Year | Value | 2022 | 77,268 | 2021 | 71,801 | 2020 | 67,440 | 2019 | 63,449 | 2018 | 59,078 | 2017 | 54,673 | 2016 | 50,129 | 2015 | 45,605 | 2014 | 41,507 | 2013 | 38,364 | 2012 | 36,757 | 2011 | 36,986 | 2010 | 38,839 | 2009 | 41,622 | 2008 | 44,439 | 2007 | 46,549 | 2006 | 47,466 | 2005 | 47,296 | 2004 | 46,570 | 2003 | 45,658 | 2002 | 44,858 | 2001 | 44,459 | 2000 | 44,571 | 1999 | 44,907 | 1998 | 45,540 | 1997 | 46,470 | 1996 | 47,044 | 1995 | 46,459 | 1994 | 44,294 | 1993 | 41,014 | 1992 | 37,235 | 1991 | 33,412 | 1990 | 30,169 | 1989 | 27,664 | 1988 | 25,711 | 1987 | 24,252 | 1986 | 23,219 | 1985 | 22,715 | 1984 | 22,725 | 1983 | 23,106 | 1982 | 23,691 | 1981 | 24,230 | 1980 | 24,479 | 1979 | 24,427 | 1978 | 24,289 | 1977 | 24,130 | 1976 | 23,987 | 1975 | 24,026 | 1974 | 24,181 | 1973 | 24,407 | 1972 | 24,683 | 1971 | 24,912 | 1970 | 25,072 | 1969 | 25,092 | 1968 | 24,877 | 1967 | 24,449 | 1966 | 23,821 | 1965 | 22,953 | 1964 | 21,944 | 1963 | 20,887 | 1962 | 19,889 | 1961 | 19,097 | 1960 | 18,612 |
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