| Year | Value | | 2022 | 8,775,069 | | 2021 | 8,509,953 | | 2020 | 8,246,544 | | 2019 | 7,969,926 | | 2018 | 7,685,953 | | 2017 | 7,413,310 | | 2016 | 7,128,282 | | 2015 | 6,864,502 | | 2014 | 6,637,951 | | 2013 | 6,410,507 | | 2012 | 6,205,382 | | 2011 | 6,094,496 | | 2010 | 6,000,046 | | 2009 | 5,852,726 | | 2008 | 5,711,552 | | 2007 | 5,549,417 | | 2006 | 5,384,226 | | 2005 | 5,226,944 | | 2004 | 5,053,614 | | 2003 | 4,875,714 | | 2002 | 4,703,881 | | 2001 | 4,535,518 | | 2000 | 4,362,674 | | 1999 | 4,195,938 | | 1998 | 4,033,843 | | 1997 | 3,874,262 | | 1996 | 3,744,956 | | 1995 | 3,615,669 | | 1994 | 3,491,631 | | 1993 | 3,323,397 | | 1992 | 3,227,072 | | 1991 | 3,377,053 | | 1990 | 3,506,800 | | 1989 | 3,521,450 | | 1988 | 3,578,912 | | 1987 | 3,574,959 | | 1986 | 3,451,294 | | 1985 | 3,313,293 | | 1984 | 3,183,352 | | 1983 | 3,070,877 | | 1982 | 2,976,212 | | 1981 | 2,968,459 | | 1980 | 2,947,735 | | 1979 | 2,706,425 | | 1978 | 2,390,997 | | 1977 | 2,227,089 | | 1976 | 2,169,532 | | 1975 | 2,117,026 | | 1974 | 2,066,012 | | 1973 | 2,014,512 | | 1972 | 1,962,724 | | 1971 | 1,913,069 | | 1970 | 1,864,619 | | 1969 | 1,817,011 | | 1968 | 1,770,816 | | 1967 | 1,725,732 | | 1966 | 1,681,880 | | 1965 | 1,639,053 | | 1964 | 1,597,255 | | 1963 | 1,556,734 | | 1962 | 1,517,245 | | 1961 | 1,478,842 | | 1960 | 1,441,556 |
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