Year | Value | 2022 | 150,274 | 2021 | 156,460 | 2020 | 155,689 | 2019 | 155,491 | 2018 | 161,191 | 2017 | 172,131 | 2016 | 183,769 | 2015 | 196,910 | 2014 | 211,767 | 2013 | 225,583 | 2012 | 237,428 | 2011 | 247,453 | 2010 | 254,758 | 2009 | 259,083 | 2008 | 262,091 | 2007 | 264,879 | 2006 | 267,512 | 2005 | 270,493 | 2004 | 275,368 | 2003 | 280,922 | 2002 | 286,856 | 2001 | 297,871 | 2000 | 308,182 | 1999 | 312,809 | 1998 | 315,120 | 1997 | 312,813 | 1996 | 308,409 | 1995 | 305,586 | 1994 | 303,770 | 1993 | 303,815 | 1992 | 305,560 | 1991 | 305,382 | 1990 | 303,850 | 1989 | 304,939 | 1988 | 304,239 | 1987 | 302,939 | 1986 | 305,967 | 1985 | 310,103 | 1984 | 311,926 | 1983 | 311,817 | 1982 | 313,003 | 1981 | 314,825 | 1980 | 316,536 | 1979 | 318,800 | 1978 | 323,094 | 1977 | 327,076 | 1976 | 328,018 | 1975 | 328,911 | 1974 | 331,587 | 1973 | 335,279 | 1972 | 339,413 | 1971 | 343,662 | 1970 | 345,760 | 1969 | 341,884 | 1968 | 331,670 | 1967 | 318,844 | 1966 | 305,990 | 1965 | 294,345 | 1964 | 285,935 | 1963 | 281,544 | 1962 | 280,757 | 1961 | 282,762 | 1960 | 287,855 |
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