| Year | Value | | 2022 | 4,144,856 | | 2021 | 3,976,262 | | 2020 | 3,808,254 | | 2019 | 3,636,948 | | 2018 | 3,483,448 | | 2017 | 3,365,080 | | 2016 | 3,286,248 | | 2015 | 3,241,177 | | 2014 | 3,212,050 | | 2013 | 3,186,184 | | 2012 | 3,160,340 | | 2011 | 3,129,358 | | 2010 | 3,095,099 | | 2009 | 3,061,460 | | 2008 | 3,024,787 | | 2007 | 2,982,984 | | 2006 | 2,933,724 | | 2005 | 2,877,250 | | 2004 | 2,815,215 | | 2003 | 2,745,343 | | 2002 | 2,668,331 | | 2001 | 2,588,342 | | 2000 | 2,507,140 | | 1999 | 2,425,419 | | 1998 | 2,343,023 | | 1997 | 2,259,379 | | 1996 | 2,173,356 | | 1995 | 2,084,039 | | 1994 | 1,991,462 | | 1993 | 1,897,508 | | 1992 | 1,805,498 | | 1991 | 1,719,578 | | 1990 | 1,642,281 | | 1989 | 1,575,514 | | 1988 | 1,519,806 | | 1987 | 1,473,874 | | 1986 | 1,435,861 | | 1985 | 1,404,398 | | 1984 | 1,378,378 | | 1983 | 1,355,808 | | 1982 | 1,334,857 | | 1981 | 1,313,809 | | 1980 | 1,290,246 | | 1979 | 1,262,835 | | 1978 | 1,231,648 | | 1977 | 1,197,117 | | 1976 | 1,160,033 | | 1975 | 1,121,183 | | 1974 | 1,081,026 | | 1973 | 1,039,756 | | 1972 | 997,612 | | 1971 | 954,872 | | 1970 | 911,877 | | 1969 | 869,203 | | 1968 | 827,966 | | 1967 | 789,768 | | 1966 | 756,273 | | 1965 | 730,327 | | 1964 | 706,003 | | 1963 | 678,847 | | 1962 | 651,323 | | 1961 | 622,099 | | 1960 | 591,838 |
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