| Year | Value | | 2022 | 1,979,965 | | 2021 | 1,937,076 | | 2020 | 1,893,349 | | 2019 | 1,845,380 | | 2018 | 1,803,422 | | 2017 | 1,765,688 | | 2016 | 1,733,964 | | 2015 | 1,717,546 | | 2014 | 1,719,113 | | 2013 | 1,738,782 | | 2012 | 1,786,500 | | 2011 | 1,837,019 | | 2010 | 1,849,433 | | 2009 | 1,830,867 | | 2008 | 1,790,664 | | 2007 | 1,710,764 | | 2006 | 1,610,239 | | 2005 | 1,532,974 | | 2004 | 1,481,142 | | 2003 | 1,442,563 | | 2002 | 1,420,551 | | 2001 | 1,416,491 | | 2000 | 1,419,034 | | 1999 | 1,412,014 | | 1998 | 1,393,325 | | 1997 | 1,374,612 | | 1996 | 1,365,169 | | 1995 | 1,363,502 | | 1994 | 1,366,454 | | 1993 | 1,374,577 | | 1992 | 1,383,666 | | 1991 | 1,390,976 | | 1990 | 1,398,629 | | 1989 | 1,407,682 | | 1988 | 1,419,397 | | 1987 | 1,437,955 | | 1986 | 1,465,716 | | 1985 | 1,500,598 | | 1984 | 1,517,823 | | 1983 | 1,489,920 | | 1982 | 1,433,016 | | 1981 | 1,375,081 | | 1980 | 1,324,862 | | 1979 | 1,306,961 | | 1978 | 1,345,126 | | 1977 | 1,409,887 | | 1976 | 1,459,853 | | 1975 | 1,487,256 | | 1974 | 1,498,836 | | 1973 | 1,502,554 | | 1972 | 1,504,229 | | 1971 | 1,504,116 | | 1970 | 1,499,773 | | 1969 | 1,491,328 | | 1968 | 1,478,188 | | 1967 | 1,459,850 | | 1966 | 1,439,591 | | 1965 | 1,417,878 | | 1964 | 1,389,194 | | 1963 | 1,351,121 | | 1962 | 1,304,064 | | 1961 | 1,253,606 | | 1960 | 1,205,155 |
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