Year | Value | 2022 | 239,616 | 2021 | 239,332 | 2020 | 238,910 | 2019 | 237,678 | 2018 | 235,830 | 2017 | 234,373 | 2016 | 236,699 | 2015 | 241,065 | 2014 | 242,246 | 2013 | 240,007 | 2012 | 235,473 | 2011 | 229,354 | 2010 | 221,365 | 2009 | 211,313 | 2008 | 199,447 | 2007 | 185,576 | 2006 | 170,264 | 2005 | 154,859 | 2004 | 139,826 | 2003 | 125,307 | 2002 | 111,329 | 2001 | 98,613 | 2000 | 88,226 | 1999 | 80,574 | 1998 | 75,243 | 1997 | 70,906 | 1996 | 66,251 | 1995 | 60,684 | 1994 | 53,919 | 1993 | 49,462 | 1992 | 48,013 | 1991 | 46,724 | 1990 | 45,685 | 1989 | 44,936 | 1988 | 44,515 | 1987 | 44,516 | 1986 | 45,027 | 1985 | 46,085 | 1984 | 47,672 | 1983 | 49,756 | 1982 | 52,261 | 1981 | 55,087 | 1980 | 58,228 | 1979 | 59,090 | 1978 | 57,290 | 1977 | 55,143 | 1976 | 52,747 | 1975 | 50,129 | 1974 | 47,250 | 1973 | 44,332 | 1972 | 40,509 | 1971 | 36,754 | 1970 | 35,544 | 1969 | 35,245 | 1968 | 33,694 | 1967 | 31,380 | 1966 | 29,029 | 1965 | 26,685 | 1964 | 24,177 | 1963 | 21,446 | 1962 | 18,586 | 1961 | 16,929 | 1960 | 16,466 |
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