Year | Value | 2022 | 480,949 | 2021 | 463,692 | 2020 | 457,258 | 2019 | 453,783 | 2018 | 454,170 | 2017 | 459,031 | 2016 | 466,717 | 2015 | 474,468 | 2014 | 479,587 | 2013 | 479,798 | 2012 | 473,948 | 2011 | 462,210 | 2010 | 446,455 | 2009 | 429,317 | 2008 | 409,681 | 2007 | 391,916 | 2006 | 379,860 | 2005 | 370,144 | 2004 | 360,789 | 2003 | 351,020 | 2002 | 339,973 | 2001 | 323,143 | 2000 | 297,460 | 1999 | 265,104 | 1998 | 234,630 | 1997 | 216,358 | 1996 | 217,215 | 1995 | 241,208 | 1994 | 284,907 | 1993 | 333,948 | 1992 | 375,261 | 1991 | 401,214 | 1990 | 404,108 | 1989 | 388,659 | 1988 | 373,811 | 1987 | 348,721 | 1986 | 325,153 | 1985 | 308,955 | 1984 | 304,299 | 1983 | 313,582 | 1982 | 331,129 | 1981 | 343,775 | 1980 | 342,029 | 1979 | 325,808 | 1978 | 298,496 | 1977 | 263,647 | 1976 | 229,059 | 1975 | 200,916 | 1974 | 180,187 | 1973 | 166,388 | 1972 | 160,082 | 1971 | 157,844 | 1970 | 157,245 | 1969 | 158,722 | 1968 | 163,338 | 1967 | 169,796 | 1966 | 175,505 | 1965 | 178,807 | 1964 | 179,501 | 1963 | 177,417 | 1962 | 172,867 | 1961 | 167,715 | 1960 | 162,966 |
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