Year | Value | 2022 | 277,646 | 2021 | 291,210 | 2020 | 306,294 | 2019 | 319,317 | 2018 | 327,771 | 2017 | 331,377 | 2016 | 331,300 | 2015 | 328,517 | 2014 | 323,910 | 2013 | 317,004 | 2012 | 307,582 | 2011 | 297,408 | 2010 | 287,312 | 2009 | 278,765 | 2008 | 272,871 | 2007 | 266,879 | 2006 | 257,578 | 2005 | 242,688 | 2004 | 221,333 | 2003 | 197,933 | 2002 | 180,485 | 2001 | 174,703 | 2000 | 182,201 | 1999 | 200,057 | 1998 | 223,454 | 1997 | 246,718 | 1996 | 263,808 | 1995 | 272,081 | 1994 | 272,771 | 1993 | 268,408 | 1992 | 262,913 | 1991 | 260,718 | 1990 | 264,700 | 1989 | 273,942 | 1988 | 284,227 | 1987 | 290,189 | 1986 | 287,358 | 1985 | 276,908 | 1984 | 260,998 | 1983 | 242,110 | 1982 | 222,413 | 1981 | 203,340 | 1980 | 185,382 | 1979 | 168,439 | 1978 | 151,825 | 1977 | 136,344 | 1976 | 124,389 | 1975 | 117,539 | 1974 | 116,078 | 1973 | 119,566 | 1972 | 126,604 | 1971 | 134,845 | 1970 | 142,198 | 1969 | 147,208 | 1968 | 149,478 | 1967 | 149,642 | 1966 | 148,682 | 1965 | 147,299 | 1964 | 145,512 | 1963 | 143,265 | 1962 | 140,760 | 1961 | 137,811 | 1960 | 134,134 |
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