| Year | Value | | 2022 | 3,940,577 | | 2021 | 3,873,084 | | 2020 | 3,814,472 | | 2019 | 3,762,010 | | 2018 | 3,709,583 | | 2017 | 3,646,579 | | 2016 | 3,572,775 | | 2015 | 3,490,052 | | 2014 | 3,396,109 | | 2013 | 3,299,691 | | 2012 | 3,215,847 | | 2011 | 3,149,947 | | 2010 | 3,101,646 | | 2009 | 3,062,728 | | 2008 | 3,023,270 | | 2007 | 2,969,494 | | 2006 | 2,892,777 | | 2005 | 2,806,395 | | 2004 | 2,720,680 | | 2003 | 2,640,462 | | 2002 | 2,570,994 | | 2001 | 2,512,553 | | 2000 | 2,458,102 | | 1999 | 2,395,872 | | 1998 | 2,325,999 | | 1997 | 2,257,481 | | 1996 | 2,191,849 | | 1995 | 2,124,976 | | 1994 | 2,053,472 | | 1993 | 1,979,171 | | 1992 | 1,905,960 | | 1991 | 1,837,053 | | 1990 | 1,773,848 | | 1989 | 1,713,916 | | 1988 | 1,652,740 | | 1987 | 1,587,556 | | 1986 | 1,519,783 | | 1985 | 1,453,731 | | 1984 | 1,393,425 | | 1983 | 1,339,982 | | 1982 | 1,293,265 | | 1981 | 1,253,101 | | 1980 | 1,216,487 | | 1979 | 1,179,902 | | 1978 | 1,145,431 | | 1977 | 1,115,418 | | 1976 | 1,087,601 | | 1975 | 1,059,514 | | 1974 | 1,027,652 | | 1973 | 992,735 | | 1972 | 958,350 | | 1971 | 925,580 | | 1970 | 897,096 | | 1969 | 873,268 | | 1968 | 849,024 | | 1967 | 821,833 | | 1966 | 793,738 | | 1965 | 767,252 | | 1964 | 743,753 | | 1963 | 722,896 | | 1962 | 704,375 | | 1961 | 687,905 | | 1960 | 671,866 |
|