Year | Value | 2022 | 161,381 | 2021 | 175,612 | 2020 | 190,531 | 2019 | 204,017 | 2018 | 213,669 | 2017 | 219,349 | 2016 | 222,210 | 2015 | 224,583 | 2014 | 226,731 | 2013 | 228,789 | 2012 | 228,696 | 2011 | 225,000 | 2010 | 223,505 | 2009 | 222,802 | 2008 | 223,576 | 2007 | 225,241 | 2006 | 227,105 | 2005 | 228,719 | 2004 | 229,880 | 2003 | 229,222 | 2002 | 229,699 | 2001 | 228,410 | 2000 | 226,887 | 1999 | 227,028 | 1998 | 228,986 | 1997 | 232,135 | 1996 | 235,431 | 1995 | 230,455 | 1994 | 231,334 | 1993 | 231,780 | 1992 | 234,009 | 1991 | 238,975 | 1990 | 246,021 | 1989 | 257,098 | 1988 | 267,746 | 1987 | 280,061 | 1986 | 292,442 | 1985 | 304,650 | 1984 | 315,394 | 1983 | 322,034 | 1982 | 323,230 | 1981 | 321,430 | 1980 | 312,776 | 1979 | 298,650 | 1978 | 274,894 | 1977 | 260,985 | 1976 | 249,113 | 1975 | 239,092 | 1974 | 228,226 | 1973 | 213,210 | 1972 | 197,049 | 1971 | 181,182 | 1970 | 165,021 | 1969 | 148,723 | 1968 | 133,537 | 1967 | 118,857 | 1966 | 106,585 | 1965 | 101,034 | 1964 | 98,839 | 1963 | 100,826 | 1962 | 104,947 | 1961 | 109,884 | 1960 | 116,726 |
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