Year | Value | 2022 | 341,210 | 2021 | 342,845 | 2020 | 342,681 | 2019 | 341,639 | 2018 | 341,414 | 2017 | 344,175 | 2016 | 351,690 | 2015 | 364,618 | 2014 | 381,165 | 2013 | 397,112 | 2012 | 407,455 | 2011 | 410,273 | 2010 | 407,408 | 2009 | 400,221 | 2008 | 391,068 | 2007 | 382,306 | 2006 | 370,921 | 2005 | 355,909 | 2004 | 341,725 | 2003 | 331,863 | 2002 | 330,107 | 2001 | 340,177 | 2000 | 360,675 | 1999 | 388,227 | 1998 | 421,414 | 1997 | 457,453 | 1996 | 491,820 | 1995 | 520,810 | 1994 | 542,572 | 1993 | 556,499 | 1992 | 564,271 | 1991 | 569,167 | 1990 | 573,365 | 1989 | 576,987 | 1988 | 577,983 | 1987 | 573,416 | 1986 | 560,686 | 1985 | 538,829 | 1984 | 509,551 | 1983 | 476,480 | 1982 | 443,986 | 1981 | 416,239 | 1980 | 398,189 | 1979 | 389,817 | 1978 | 386,490 | 1977 | 385,270 | 1976 | 383,790 | 1975 | 381,335 | 1974 | 377,560 | 1973 | 371,601 | 1972 | 363,903 | 1971 | 355,790 | 1970 | 347,943 | 1969 | 341,190 | 1968 | 336,915 | 1967 | 334,605 | 1966 | 332,636 | 1965 | 330,557 | 1964 | 328,412 | 1963 | 326,294 | 1962 | 323,891 | 1961 | 320,496 | 1960 | 315,661 |
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