| Year | Value | | 2022 | 2,244,692 | | 2021 | 2,245,088 | | 2020 | 2,329,561 | | 2019 | 2,327,032 | | 2018 | 2,327,904 | | 2017 | 2,337,248 | | 2016 | 2,354,458 | | 2015 | 2,360,534 | | 2014 | 2,370,234 | | 2013 | 2,370,674 | | 2012 | 2,368,751 | | 2011 | 2,368,126 | | 2010 | 2,369,143 | | 2009 | 2,367,290 | | 2008 | 2,362,537 | | 2007 | 2,355,577 | | 2006 | 2,348,849 | | 2005 | 2,341,055 | | 2004 | 2,330,812 | | 2003 | 2,322,932 | | 2002 | 2,315,000 | | 2001 | 2,306,414 | | 2000 | 2,387,324 | | 1999 | 2,400,611 | | 1998 | 2,400,581 | | 1997 | 2,391,671 | | 1996 | 2,392,886 | | 1995 | 2,415,305 | | 1994 | 2,421,285 | | 1993 | 2,383,868 | | 1992 | 2,360,573 | | 1991 | 2,408,141 | | 1990 | 2,438,225 | | 1989 | 2,416,381 | | 1988 | 2,393,676 | | 1987 | 2,369,256 | | 1986 | 2,343,584 | | 1985 | 2,317,187 | | 1984 | 2,290,391 | | 1983 | 2,263,306 | | 1982 | 2,235,415 | | 1981 | 2,208,313 | | 1980 | 2,175,007 | | 1979 | 2,141,029 | | 1978 | 2,103,222 | | 1977 | 2,062,157 | | 1976 | 2,020,532 | | 1975 | 1,979,180 | | 1974 | 1,939,336 | | 1973 | 1,900,310 | | 1972 | 1,862,071 | | 1971 | 1,824,267 | | 1970 | 1,773,549 | | 1969 | 1,718,390 | | 1968 | 1,662,257 | | 1967 | 1,606,614 | | 1966 | 1,551,723 | | 1965 | 1,497,338 | | 1964 | 1,444,787 | | 1963 | 1,393,585 | | 1962 | 1,342,990 | | 1961 | 1,293,527 | | 1960 | 1,248,430 |
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