| Year | Value | | 2022 | 425,130 | | 2021 | 413,287 | | 2020 | 401,814 | | 2019 | 389,540 | | 2018 | 377,476 | | 2017 | 366,873 | | 2016 | 358,369 | | 2015 | 351,445 | | 2014 | 345,014 | | 2013 | 339,484 | | 2012 | 334,718 | | 2011 | 329,916 | | 2010 | 325,076 | | 2009 | 323,079 | | 2008 | 318,764 | | 2007 | 315,375 | | 2006 | 311,575 | | 2005 | 306,620 | | 2004 | 301,124 | | 2003 | 295,285 | | 2002 | 289,067 | | 2001 | 282,151 | | 2000 | 274,841 | | 1999 | 267,232 | | 1998 | 259,300 | | 1997 | 251,620 | | 1996 | 244,193 | | 1995 | 236,956 | | 1994 | 229,867 | | 1993 | 223,510 | | 1992 | 217,883 | | 1991 | 211,637 | | 1990 | 204,787 | | 1989 | 197,957 | | 1988 | 191,394 | | 1987 | 185,234 | | 1986 | 179,755 | | 1985 | 174,976 | | 1984 | 170,923 | | 1983 | 167,019 | | 1982 | 162,838 | | 1981 | 158,364 | | 1980 | 153,470 | | 1979 | 148,188 | | 1978 | 142,506 | | 1977 | 136,753 | | 1976 | 131,409 | | 1975 | 126,504 | | 1974 | 121,943 | | 1973 | 117,829 | | 1972 | 114,114 | | 1971 | 110,647 | | 1970 | 107,157 | | 1969 | 103,918 | | 1968 | 100,908 | | 1967 | 97,507 | | 1966 | 93,673 | | 1965 | 89,639 | | 1964 | 85,529 | | 1963 | 81,131 | | 1962 | 76,524 | | 1961 | 71,973 | | 1960 | 67,731 |
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