Year | Value | 2022 | 332,574 | 2021 | 333,018 | 2020 | 332,866 | 2019 | 331,906 | 2018 | 329,668 | 2017 | 325,912 | 2016 | 321,416 | 2015 | 317,080 | 2014 | 313,507 | 2013 | 311,131 | 2012 | 310,023 | 2011 | 309,613 | 2010 | 309,353 | 2009 | 309,477 | 2008 | 310,190 | 2007 | 311,517 | 2006 | 313,614 | 2005 | 316,633 | 2004 | 320,413 | 2003 | 324,620 | 2002 | 328,607 | 2001 | 331,771 | 2000 | 333,919 | 1999 | 335,115 | 1998 | 335,528 | 1997 | 335,188 | 1996 | 334,182 | 1995 | 332,525 | 1994 | 330,149 | 1993 | 327,186 | 1992 | 323,646 | 1991 | 319,361 | 1990 | 314,466 | 1989 | 309,020 | 1988 | 302,823 | 1987 | 295,889 | 1986 | 288,458 | 1985 | 280,207 | 1984 | 271,049 | 1983 | 261,442 | 1982 | 251,920 | 1981 | 242,767 | 1980 | 234,428 | 1979 | 227,362 | 1978 | 221,420 | 1977 | 216,283 | 1976 | 211,874 | 1975 | 208,329 | 1974 | 205,516 | 1973 | 203,380 | 1972 | 201,902 | 1971 | 200,911 | 1970 | 200,090 | 1969 | 199,144 | 1968 | 197,870 | 1967 | 196,004 | 1966 | 193,310 | 1965 | 189,784 | 1964 | 185,636 | 1963 | 181,097 | 1962 | 176,856 | 1961 | 173,188 | 1960 | 169,783 |
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