Year | Value | 2022 | 253,809 | 2021 | 272,228 | 2020 | 287,361 | 2019 | 305,285 | 2018 | 320,966 | 2017 | 328,863 | 2016 | 328,917 | 2015 | 323,065 | 2014 | 312,126 | 2013 | 301,100 | 2012 | 295,531 | 2011 | 284,940 | 2010 | 268,565 | 2009 | 260,412 | 2008 | 255,802 | 2007 | 251,310 | 2006 | 249,684 | 2005 | 251,067 | 2004 | 248,595 | 2003 | 242,386 | 2002 | 236,652 | 2001 | 231,331 | 2000 | 227,462 | 1999 | 226,054 | 1998 | 228,223 | 1997 | 231,950 | 1996 | 236,778 | 1995 | 242,875 | 1994 | 248,422 | 1993 | 252,180 | 1992 | 254,629 | 1991 | 256,966 | 1990 | 259,141 | 1989 | 262,259 | 1988 | 266,286 | 1987 | 269,652 | 1986 | 272,891 | 1985 | 273,292 | 1984 | 270,921 | 1983 | 255,848 | 1982 | 228,647 | 1981 | 201,302 | 1980 | 178,978 | 1979 | 172,562 | 1978 | 188,987 | 1977 | 218,546 | 1976 | 247,776 | 1975 | 271,608 | 1974 | 281,983 | 1973 | 282,055 | 1972 | 278,827 | 1971 | 274,045 | 1970 | 268,228 | 1969 | 261,012 | 1968 | 255,390 | 1967 | 252,394 | 1966 | 250,356 | 1965 | 249,843 | 1964 | 249,823 | 1963 | 246,819 | 1962 | 240,894 | 1961 | 232,769 | 1960 | 222,873 |
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