Year | Value | 2022 | 304,841 | 2021 | 299,999 | 2020 | 295,112 | 2019 | 291,249 | 2018 | 289,717 | 2017 | 289,688 | 2016 | 291,403 | 2015 | 294,638 | 2014 | 298,678 | 2013 | 303,671 | 2012 | 309,134 | 2011 | 313,926 | 2010 | 317,628 | 2009 | 320,615 | 2008 | 321,312 | 2007 | 319,525 | 2006 | 316,123 | 2005 | 311,281 | 2004 | 304,537 | 2003 | 296,140 | 2002 | 287,783 | 2001 | 279,901 | 2000 | 272,595 | 1999 | 266,466 | 1998 | 261,494 | 1997 | 257,613 | 1996 | 254,099 | 1995 | 251,585 | 1994 | 250,543 | 1993 | 250,662 | 1992 | 251,276 | 1991 | 252,434 | 1990 | 252,575 | 1989 | 251,209 | 1988 | 248,845 | 1987 | 244,769 | 1986 | 239,268 | 1985 | 232,600 | 1984 | 225,450 | 1983 | 218,066 | 1982 | 210,978 | 1981 | 205,600 | 1980 | 202,761 | 1979 | 201,278 | 1978 | 200,575 | 1977 | 200,828 | 1976 | 201,321 | 1975 | 201,937 | 1974 | 201,698 | 1973 | 200,242 | 1972 | 198,655 | 1971 | 197,516 | 1970 | 196,538 | 1969 | 195,251 | 1968 | 194,006 | 1967 | 192,881 | 1966 | 192,179 | 1965 | 191,526 | 1964 | 188,060 | 1963 | 181,279 | 1962 | 173,880 | 1961 | 166,340 | 1960 | 160,307 |
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