Year | Value | 2022 | 329,003 | 2021 | 329,362 | 2020 | 329,181 | 2019 | 329,058 | 2018 | 330,654 | 2017 | 334,321 | 2016 | 339,004 | 2015 | 343,241 | 2014 | 346,221 | 2013 | 347,318 | 2012 | 345,146 | 2011 | 340,400 | 2010 | 332,686 | 2009 | 326,860 | 2008 | 322,574 | 2007 | 319,871 | 2006 | 319,161 | 2005 | 319,943 | 2004 | 320,943 | 2003 | 321,035 | 2002 | 319,725 | 2001 | 316,649 | 2000 | 312,741 | 1999 | 310,252 | 1998 | 310,766 | 1997 | 314,687 | 1996 | 321,875 | 1995 | 331,286 | 1994 | 340,245 | 1993 | 346,685 | 1992 | 351,068 | 1991 | 354,993 | 1990 | 360,202 | 1989 | 368,095 | 1988 | 376,912 | 1987 | 384,001 | 1986 | 389,544 | 1985 | 392,527 | 1984 | 392,857 | 1983 | 392,081 | 1982 | 391,006 | 1981 | 389,050 | 1980 | 386,316 | 1979 | 382,408 | 1978 | 377,242 | 1977 | 372,161 | 1976 | 366,795 | 1975 | 361,359 | 1974 | 356,685 | 1973 | 354,022 | 1972 | 353,113 | 1971 | 353,387 | 1970 | 350,388 | 1969 | 342,200 | 1968 | 331,083 | 1967 | 314,519 | 1966 | 292,404 | 1965 | 275,779 | 1964 | 269,687 | 1963 | 268,661 | 1962 | 272,419 | 1961 | 281,358 | 1960 | 289,606 |
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