Year | Value | 2023 | 340,150 | 2022 | 327,339 | 2021 | 316,408 | 2020 | 307,996 | 2019 | 305,511 | 2018 | 300,631 | 2017 | 293,609 | 2016 | 295,703 | 2015 | 312,477 | 2014 | 341,471 | 2013 | 374,553 | 2012 | 406,201 | 2011 | 430,500 | 2010 | 449,611 | 2009 | 463,699 | 2008 | 467,076 | 2007 | 466,425 | 2006 | 467,257 | 2005 | 463,896 | 2004 | 456,478 | 2003 | 447,035 | 2002 | 435,426 | 2001 | 421,859 | 2000 | 408,681 | 1999 | 396,819 | 1998 | 384,757 | 1997 | 372,971 | 1996 | 362,613 | 1995 | 352,274 | 1994 | 340,795 | 1993 | 333,914 | 1992 | 331,602 | 1991 | 329,467 | 1990 | 331,259 | 1989 | 335,941 | 1988 | 342,544 | 1987 | 349,583 | 1986 | 357,963 | 1985 | 368,941 | 1984 | 379,234 | 1983 | 387,793 | 1982 | 396,172 | 1981 | 403,211 | 1980 | 406,993 | 1979 | 408,080 | 1978 | 401,666 | 1977 | 386,924 | 1976 | 365,975 | 1975 | 344,894 |
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