Year | Value | 2022 | 316,617 | 2021 | 305,060 | 2020 | 295,000 | 2019 | 284,503 | 2018 | 274,609 | 2017 | 265,482 | 2016 | 255,795 | 2015 | 247,907 | 2014 | 244,309 | 2013 | 244,134 | 2012 | 246,409 | 2011 | 246,193 | 2010 | 238,564 | 2009 | 231,796 | 2008 | 228,910 | 2007 | 224,421 | 2006 | 227,433 | 2005 | 243,831 | 2004 | 259,469 | 2003 | 260,569 | 2002 | 251,791 | 2001 | 237,049 | 2000 | 215,928 | 1999 | 193,972 | 1998 | 182,623 | 1997 | 183,473 | 1996 | 187,457 | 1995 | 192,756 | 1994 | 198,440 | 1993 | 203,462 | 1992 | 207,398 | 1991 | 211,479 | 1990 | 217,401 | 1989 | 225,257 | 1988 | 234,574 | 1987 | 244,356 | 1986 | 253,072 | 1985 | 257,792 | 1984 | 253,931 | 1983 | 237,274 | 1982 | 212,885 | 1981 | 188,151 | 1980 | 168,688 | 1979 | 165,059 | 1978 | 179,406 | 1977 | 202,383 | 1976 | 225,067 | 1975 | 243,484 | 1974 | 253,442 | 1973 | 256,167 | 1972 | 256,805 | 1971 | 257,729 | 1970 | 257,894 | 1969 | 256,635 | 1968 | 256,014 | 1967 | 255,322 | 1966 | 254,074 | 1965 | 252,934 | 1964 | 251,649 | 1963 | 249,339 | 1962 | 246,069 | 1961 | 242,310 | 1960 | 238,589 |
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