| Year | Value | | 2022 | 1,546,632 | | 2021 | 1,597,912 | | 2020 | 1,607,622 | | 2019 | 1,605,590 | | 2018 | 1,589,314 | | 2017 | 1,568,078 | | 2016 | 1,557,687 | | 2015 | 1,546,930 | | 2014 | 1,523,332 | | 2013 | 1,493,528 | | 2012 | 1,458,415 | | 2011 | 1,413,268 | | 2010 | 1,364,342 | | 2009 | 1,322,763 | | 2008 | 1,280,464 | | 2007 | 1,246,116 | | 2006 | 1,222,569 | | 2005 | 1,210,260 | | 2004 | 1,210,570 | | 2003 | 1,224,847 | | 2002 | 1,247,897 | | 2001 | 1,278,298 | | 2000 | 1,311,132 | | 1999 | 1,370,112 | | 1998 | 1,432,922 | | 1997 | 1,499,938 | | 1996 | 1,563,719 | | 1995 | 1,617,614 | | 1994 | 1,651,784 | | 1993 | 1,663,326 | | 1992 | 1,662,138 | | 1991 | 1,652,814 | | 1990 | 1,634,536 | | 1989 | 1,604,197 | | 1988 | 1,574,675 | | 1987 | 1,538,585 | | 1986 | 1,480,875 | | 1985 | 1,381,388 | | 1984 | 1,259,056 | | 1983 | 1,141,052 | | 1982 | 1,027,771 | | 1981 | 943,471 | | 1980 | 920,729 | | 1979 | 946,398 | | 1978 | 977,801 | | 1977 | 1,011,419 | | 1976 | 1,043,304 | | 1975 | 1,065,806 | | 1974 | 1,077,323 | | 1973 | 1,085,508 | | 1972 | 1,098,743 | | 1971 | 1,116,731 | | 1970 | 1,143,309 | | 1969 | 1,169,387 | | 1968 | 1,183,868 | | 1967 | 1,177,304 | | 1966 | 1,147,636 | | 1965 | 1,112,721 | | 1964 | 1,073,081 | | 1963 | 1,031,909 | | 1962 | 1,002,754 | | 1961 | 975,522 | | 1960 | 940,437 |
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