Year | Value | 2022 | 291,243 | 2021 | 292,501 | 2020 | 295,362 | 2019 | 298,792 | 2018 | 301,960 | 2017 | 305,304 | 2016 | 308,884 | 2015 | 312,218 | 2014 | 314,801 | 2013 | 316,681 | 2012 | 317,102 | 2011 | 315,515 | 2010 | 310,116 | 2009 | 304,551 | 2008 | 298,487 | 2007 | 292,115 | 2006 | 287,138 | 2005 | 284,088 | 2004 | 282,370 | 2003 | 281,679 | 2002 | 282,146 | 2001 | 282,661 | 2000 | 282,526 | 1999 | 282,696 | 1998 | 284,588 | 1997 | 288,333 | 1996 | 292,804 | 1995 | 297,376 | 1994 | 300,865 | 1993 | 301,790 | 1992 | 299,563 | 1991 | 295,413 | 1990 | 290,774 | 1989 | 287,066 | 1988 | 284,778 | 1987 | 284,494 | 1986 | 286,689 | 1985 | 290,203 | 1984 | 293,735 | 1983 | 296,212 | 1982 | 297,307 | 1981 | 296,962 | 1980 | 295,645 | 1979 | 295,040 | 1978 | 297,225 | 1977 | 302,729 | 1976 | 311,309 | 1975 | 321,377 | 1974 | 330,386 | 1973 | 336,925 | 1972 | 341,686 | 1971 | 345,769 | 1970 | 351,711 | 1969 | 360,618 | 1968 | 370,069 | 1967 | 377,057 | 1966 | 381,314 | 1965 | 382,696 | 1964 | 380,684 | 1963 | 377,517 | 1962 | 374,657 | 1961 | 371,948 | 1960 | 368,726 |
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