Year | Value | 2022 | 52,770 | 2021 | 51,899 | 2020 | 54,022 | 2019 | 57,680 | 2018 | 61,812 | 2017 | 65,801 | 2016 | 68,911 | 2015 | 70,712 | 2014 | 71,635 | 2013 | 71,654 | 2012 | 71,414 | 2011 | 71,281 | 2010 | 70,772 | 2009 | 70,184 | 2008 | 69,662 | 2007 | 69,513 | 2006 | 68,585 | 2005 | 66,685 | 2004 | 64,539 | 2003 | 61,991 | 2002 | 59,453 | 2001 | 56,620 | 2000 | 53,094 | 1999 | 48,952 | 1998 | 44,307 | 1997 | 39,503 | 1996 | 34,981 | 1995 | 31,555 | 1994 | 29,739 | 1993 | 29,904 | 1992 | 31,803 | 1991 | 33,679 | 1990 | 34,678 | 1989 | 35,315 | 1988 | 35,533 | 1987 | 35,198 | 1986 | 34,486 | 1985 | 33,569 | 1984 | 32,401 | 1983 | 30,871 | 1982 | 29,226 | 1981 | 27,761 | 1980 | 26,607 | 1979 | 25,766 | 1978 | 25,247 | 1977 | 24,888 | 1976 | 24,344 | 1975 | 23,373 | 1974 | 22,002 | 1973 | 20,233 | 1972 | 18,195 | 1971 | 16,355 | 1970 | 15,054 | 1969 | 14,297 | 1968 | 14,107 | 1967 | 14,343 | 1966 | 14,543 | 1965 | 14,369 | 1964 | 13,813 | 1963 | 12,895 | 1962 | 11,718 | 1961 | 10,722 | 1960 | 10,174 |
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