| Year | Value | | 2022 | 3,821,684 | | 2021 | 3,964,374 | | 2020 | 4,077,268 | | 2019 | 4,140,724 | | 2018 | 4,158,649 | | 2017 | 4,146,960 | | 2016 | 4,122,207 | | 2015 | 4,095,666 | | 2014 | 4,072,649 | | 2013 | 4,053,232 | | 2012 | 4,032,291 | | 2011 | 4,002,536 | | 2010 | 3,959,361 | | 2009 | 3,907,313 | | 2008 | 3,853,796 | | 2007 | 3,797,832 | | 2006 | 3,740,393 | | 2005 | 3,688,444 | | 2004 | 3,639,380 | | 2003 | 3,595,538 | | 2002 | 3,550,447 | | 2001 | 3,487,489 | | 2000 | 3,406,481 | | 1999 | 3,309,036 | | 1998 | 3,193,345 | | 1997 | 3,072,662 | | 1996 | 2,972,780 | | 1995 | 2,908,102 | | 1994 | 2,877,353 | | 1993 | 2,870,934 | | 1992 | 2,879,412 | | 1991 | 2,854,275 | | 1990 | 2,817,462 | | 1989 | 2,799,539 | | 1988 | 2,765,391 | | 1987 | 2,724,076 | | 1986 | 2,695,044 | | 1985 | 2,635,707 | | 1984 | 2,543,996 | | 1983 | 2,440,363 | | 1982 | 2,325,415 | | 1981 | 2,211,135 | | 1980 | 2,110,408 | | 1979 | 2,028,192 | | 1978 | 1,922,361 | | 1977 | 1,778,889 | | 1976 | 1,649,767 | | 1975 | 1,533,105 | | 1974 | 1,397,318 | | 1973 | 1,299,296 | | 1972 | 1,246,767 | | 1971 | 1,204,079 | | 1970 | 1,170,665 | | 1969 | 1,149,968 | | 1968 | 1,137,284 | | 1967 | 1,132,211 | | 1966 | 1,135,183 | | 1965 | 1,145,853 | | 1964 | 1,163,237 | | 1963 | 1,187,207 | | 1962 | 1,211,642 | | 1961 | 1,226,005 | | 1960 | 1,225,018 |
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