Year | Value | 2022 | 276,369 | 2021 | 281,805 | 2020 | 286,264 | 2019 | 288,293 | 2018 | 289,659 | 2017 | 289,362 | 2016 | 285,845 | 2015 | 280,834 | 2014 | 276,447 | 2013 | 271,870 | 2012 | 267,946 | 2011 | 265,145 | 2010 | 258,870 | 2009 | 251,810 | 2008 | 245,482 | 2007 | 238,272 | 2006 | 233,563 | 2005 | 231,303 | 2004 | 230,359 | 2003 | 230,921 | 2002 | 232,495 | 2001 | 233,047 | 2000 | 235,491 | 1999 | 241,559 | 1998 | 248,717 | 1997 | 257,432 | 1996 | 267,451 | 1995 | 277,229 | 1994 | 285,433 | 1993 | 291,059 | 1992 | 292,983 | 1991 | 288,786 | 1990 | 279,786 | 1989 | 270,915 | 1988 | 263,267 | 1987 | 256,777 | 1986 | 251,340 | 1985 | 246,766 | 1984 | 242,380 | 1983 | 238,441 | 1982 | 234,361 | 1981 | 229,977 | 1980 | 228,518 | 1979 | 230,816 | 1978 | 235,687 | 1977 | 241,981 | 1976 | 250,019 | 1975 | 258,486 | 1974 | 263,307 | 1973 | 263,390 | 1972 | 260,256 | 1971 | 255,590 | 1970 | 253,522 | 1969 | 248,183 | 1968 | 236,699 | 1967 | 225,774 | 1966 | 217,834 | 1965 | 214,311 | 1964 | 211,698 | 1963 | 207,523 | 1962 | 203,336 | 1961 | 198,439 | 1960 | 194,411 |
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