Year | Value | 2022 | 243,229 | 2021 | 252,257 | 2020 | 257,365 | 2019 | 260,337 | 2018 | 261,677 | 2017 | 260,983 | 2016 | 257,509 | 2015 | 252,570 | 2014 | 249,362 | 2013 | 247,495 | 2012 | 246,236 | 2011 | 246,917 | 2010 | 250,047 | 2009 | 250,777 | 2008 | 250,793 | 2007 | 251,645 | 2006 | 253,156 | 2005 | 255,286 | 2004 | 257,195 | 2003 | 259,526 | 2002 | 261,779 | 2001 | 265,186 | 2000 | 271,199 | 1999 | 280,785 | 1998 | 292,259 | 1997 | 304,346 | 1996 | 311,153 | 1995 | 313,465 | 1994 | 320,375 | 1993 | 316,643 | 1992 | 307,069 | 1991 | 299,265 | 1990 | 291,956 | 1989 | 278,402 | 1988 | 266,183 | 1987 | 258,978 | 1986 | 256,319 | 1985 | 257,126 | 1984 | 261,832 | 1983 | 268,497 | 1982 | 275,315 | 1981 | 281,203 | 1980 | 286,234 | 1979 | 291,315 | 1978 | 295,327 | 1977 | 298,042 | 1976 | 299,110 | 1975 | 298,260 | 1974 | 296,795 | 1973 | 294,587 | 1972 | 291,920 | 1971 | 288,540 | 1970 | 284,549 | 1969 | 280,502 | 1968 | 275,002 | 1967 | 267,769 | 1966 | 258,668 | 1965 | 245,996 | 1964 | 228,896 | 1963 | 206,543 | 1962 | 180,625 | 1961 | 155,206 | 1960 | 137,470 |
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