Year | Value | 2022 | 297,706 | 2021 | 298,942 | 2020 | 298,906 | 2019 | 295,785 | 2018 | 289,140 | 2017 | 279,998 | 2016 | 269,855 | 2015 | 259,306 | 2014 | 250,407 | 2013 | 244,341 | 2012 | 238,606 | 2011 | 230,460 | 2010 | 217,416 | 2009 | 198,064 | 2008 | 176,255 | 2007 | 159,187 | 2006 | 152,117 | 2005 | 157,122 | 2004 | 171,729 | 2003 | 191,564 | 2002 | 211,866 | 2001 | 227,033 | 2000 | 234,274 | 1999 | 234,976 | 1998 | 231,886 | 1997 | 228,389 | 1996 | 227,596 | 1995 | 231,860 | 1994 | 241,341 | 1993 | 251,614 | 1992 | 257,197 | 1991 | 255,985 | 1990 | 248,274 | 1989 | 234,875 | 1988 | 218,404 | 1987 | 201,128 | 1986 | 183,672 | 1985 | 167,566 | 1984 | 152,479 | 1983 | 137,593 | 1982 | 123,626 | 1981 | 112,705 | 1980 | 106,414 | 1979 | 105,332 | 1978 | 109,107 | 1977 | 116,471 | 1976 | 125,364 | 1975 | 133,568 | 1974 | 139,393 | 1973 | 142,363 | 1972 | 143,172 | 1971 | 142,709 | 1970 | 141,557 | 1969 | 139,708 | 1968 | 136,926 | 1967 | 133,479 | 1966 | 129,412 | 1965 | 124,564 | 1964 | 119,333 | 1963 | 114,292 | 1962 | 109,746 | 1961 | 105,972 | 1960 | 103,569 |
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