| Year | Value | | 2022 | 221,340 | | 2021 | 224,215 | | 2020 | 227,148 | | 2019 | 230,087 | | 2018 | 233,011 | | 2017 | 235,937 | | 2016 | 238,683 | | 2015 | 241,028 | | 2014 | 242,887 | | 2013 | 244,322 | | 2012 | 245,494 | | 2011 | 246,519 | | 2010 | 247,546 | | 2009 | 248,775 | | 2008 | 250,253 | | 2007 | 251,962 | | 2006 | 253,823 | | 2005 | 255,912 | | 2004 | 258,226 | | 2003 | 260,752 | | 2002 | 263,402 | | 2001 | 266,113 | | 2000 | 268,857 | | 1999 | 271,703 | | 1998 | 274,559 | | 1997 | 277,372 | | 1996 | 280,125 | | 1995 | 282,769 | | 1994 | 285,203 | | 1993 | 287,666 | | 1992 | 293,089 | | 1991 | 298,332 | | 1990 | 303,333 | | 1989 | 308,072 | | 1988 | 312,524 | | 1987 | 316,756 | | 1986 | 319,467 | | 1985 | 322,020 | | 1984 | 324,399 | | 1983 | 326,629 | | 1982 | 328,688 | | 1981 | 330,629 | | 1980 | 339,467 | | 1979 | 348,030 | | 1978 | 356,174 | | 1977 | 363,915 | | 1976 | 371,261 | | 1975 | 378,296 | | 1974 | 384,934 | | 1973 | 391,147 | | 1972 | 396,827 | | 1971 | 401,897 | | 1970 | 406,091 | | 1969 | 407,854 | | 1968 | 409,943 | | 1967 | 412,699 | | 1966 | 415,160 | | 1965 | 417,359 | | 1964 | 419,351 | | 1963 | 421,158 | | 1962 | 422,738 | | 1961 | 424,136 | | 1960 | 424,029 |
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