Year | Value | 2022 | 344,122 | 2021 | 343,694 | 2020 | 342,901 | 2019 | 342,222 | 2018 | 342,952 | 2017 | 345,405 | 2016 | 348,982 | 2015 | 352,035 | 2014 | 353,559 | 2013 | 353,323 | 2012 | 350,070 | 2011 | 344,332 | 2010 | 335,684 | 2009 | 329,149 | 2008 | 324,651 | 2007 | 322,167 | 2006 | 321,785 | 2005 | 322,998 | 2004 | 324,912 | 2003 | 325,879 | 2002 | 324,955 | 2001 | 322,311 | 2000 | 319,112 | 1999 | 317,220 | 1998 | 318,478 | 1997 | 323,439 | 1996 | 331,449 | 1995 | 341,669 | 1994 | 351,440 | 1993 | 358,467 | 1992 | 363,533 | 1991 | 368,352 | 1990 | 374,411 | 1989 | 383,151 | 1988 | 392,700 | 1987 | 400,256 | 1986 | 406,021 | 1985 | 409,010 | 1984 | 409,275 | 1983 | 408,549 | 1982 | 407,642 | 1981 | 405,688 | 1980 | 402,537 | 1979 | 398,037 | 1978 | 392,534 | 1977 | 387,356 | 1976 | 381,990 | 1975 | 376,749 | 1974 | 372,496 | 1973 | 369,825 | 1972 | 368,610 | 1971 | 369,080 | 1970 | 365,823 | 1969 | 356,542 | 1968 | 344,549 | 1967 | 327,085 | 1966 | 303,127 | 1965 | 284,841 | 1964 | 277,168 | 1963 | 274,035 | 1962 | 276,321 | 1961 | 284,296 | 1960 | 291,736 |
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