| Year | Value | | 2022 | 6,854,020 | | 2021 | 6,685,900 | | 2020 | 6,518,034 | | 2019 | 6,349,991 | | 2018 | 6,184,649 | | 2017 | 6,024,466 | | 2016 | 5,866,792 | | 2015 | 5,711,742 | | 2014 | 5,564,217 | | 2013 | 5,425,320 | | 2012 | 5,292,876 | | 2011 | 5,163,256 | | 2010 | 5,035,358 | | 2009 | 4,911,573 | | 2008 | 4,791,806 | | 2007 | 4,676,528 | | 2006 | 4,570,372 | | 2005 | 4,479,878 | | 2004 | 4,395,576 | | 2003 | 4,303,547 | | 2002 | 4,206,776 | | 2001 | 4,150,573 | | 2000 | 4,109,599 | | 1999 | 4,033,553 | | 1998 | 3,943,988 | | 1997 | 3,875,996 | | 1996 | 3,801,363 | | 1995 | 3,691,007 | | 1994 | 3,585,501 | | 1993 | 3,475,466 | | 1992 | 3,366,236 | | 1991 | 3,255,829 | | 1990 | 3,122,934 | | 1989 | 3,012,075 | | 1988 | 2,930,590 | | 1987 | 2,850,373 | | 1986 | 2,774,100 | | 1985 | 2,703,395 | | 1984 | 2,638,602 | | 1983 | 2,579,535 | | 1982 | 2,525,327 | | 1981 | 2,475,943 | | 1980 | 2,431,622 | | 1979 | 2,391,693 | | 1978 | 2,355,865 | | 1977 | 2,323,157 | | 1976 | 2,291,789 | | 1975 | 2,260,555 | | 1974 | 2,228,818 | | 1973 | 2,196,117 | | 1972 | 2,162,488 | | 1971 | 2,127,863 | | 1970 | 2,091,820 | | 1969 | 2,054,454 | | 1968 | 2,016,301 | | 1967 | 1,978,580 | | 1966 | 1,942,109 | | 1965 | 1,906,864 | | 1964 | 1,872,799 | | 1963 | 1,839,809 | | 1962 | 1,807,830 | | 1961 | 1,776,820 | | 1960 | 1,746,844 |
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