Year | Value | 2022 | 298,207 | 2021 | 299,521 | 2020 | 300,348 | 2019 | 304,459 | 2018 | 307,971 | 2017 | 310,397 | 2016 | 315,169 | 2015 | 320,514 | 2014 | 325,678 | 2013 | 329,561 | 2012 | 332,923 | 2011 | 336,041 | 2010 | 337,495 | 2009 | 337,704 | 2008 | 338,273 | 2007 | 338,951 | 2006 | 340,306 | 2005 | 342,947 | 2004 | 345,458 | 2003 | 346,821 | 2002 | 347,208 | 2001 | 345,957 | 2000 | 343,007 | 1999 | 338,720 | 1998 | 333,482 | 1997 | 327,907 | 1996 | 322,390 | 1995 | 317,416 | 1994 | 314,076 | 1993 | 312,543 | 1992 | 312,092 | 1991 | 313,029 | 1990 | 314,821 | 1989 | 316,160 | 1988 | 317,368 | 1987 | 319,017 | 1986 | 321,388 | 1985 | 324,541 | 1984 | 328,218 | 1983 | 331,307 | 1982 | 333,173 | 1981 | 333,958 | 1980 | 333,735 | 1979 | 331,238 | 1978 | 326,243 | 1977 | 319,726 | 1976 | 311,775 | 1975 | 302,750 | 1974 | 293,929 | 1973 | 285,311 | 1972 | 276,342 | 1971 | 267,046 | 1970 | 256,544 | 1969 | 245,277 | 1968 | 235,326 | 1967 | 227,578 | 1966 | 220,797 | 1965 | 214,605 | 1964 | 210,030 | 1963 | 206,595 | 1962 | 202,947 | 1961 | 198,863 | 1960 | 194,282 |
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