Year | Value | 2022 | 69,503 | 2021 | 67,138 | 2020 | 64,170 | 2019 | 60,025 | 2018 | 56,118 | 2017 | 52,915 | 2016 | 51,426 | 2015 | 53,133 | 2014 | 56,948 | 2013 | 61,454 | 2012 | 65,489 | 2011 | 68,465 | 2010 | 70,504 | 2009 | 71,928 | 2008 | 72,768 | 2007 | 72,764 | 2006 | 71,650 | 2005 | 70,023 | 2004 | 68,447 | 2003 | 66,759 | 2002 | 65,054 | 2001 | 62,818 | 2000 | 59,673 | 1999 | 55,574 | 1998 | 50,797 | 1997 | 45,705 | 1996 | 40,530 | 1995 | 35,762 | 1994 | 31,957 | 1993 | 29,341 | 1992 | 27,981 | 1991 | 26,808 | 1990 | 25,605 | 1989 | 25,354 | 1988 | 26,180 | 1987 | 27,827 | 1986 | 29,807 | 1985 | 31,772 | 1984 | 33,593 | 1983 | 35,219 | 1982 | 36,448 | 1981 | 37,136 | 1980 | 37,194 | 1979 | 36,594 | 1978 | 35,350 | 1977 | 33,675 | 1976 | 31,938 | 1975 | 30,411 | 1974 | 29,109 | 1973 | 27,992 | 1972 | 27,002 | 1971 | 25,884 | 1970 | 24,500 | 1969 | 22,888 | 1968 | 21,034 | 1967 | 19,058 | 1966 | 17,297 | 1965 | 15,920 | 1964 | 14,924 | 1963 | 14,365 | 1962 | 14,167 | 1961 | 13,981 | 1960 | 13,620 |
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