| Year | Value | | 2022 | 6,502,136 | | 2021 | 6,441,016 | | 2020 | 6,384,901 | | 2019 | 6,332,759 | | 2018 | 6,283,319 | | 2017 | 6,234,162 | | 2016 | 6,174,416 | | 2015 | 6,105,617 | | 2014 | 6,034,707 | | 2013 | 5,959,745 | | 2012 | 5,889,928 | | 2011 | 5,825,978 | | 2010 | 5,759,681 | | 2009 | 5,697,988 | | 2008 | 5,625,324 | | 2007 | 5,552,336 | | 2006 | 5,500,991 | | 2005 | 5,464,643 | | 2004 | 5,427,827 | | 2003 | 5,388,808 | | 2002 | 5,347,082 | | 2001 | 5,304,905 | | 2000 | 5,272,018 | | 1999 | 5,246,404 | | 1998 | 5,225,282 | | 1997 | 5,213,607 | | 1996 | 5,204,882 | | 1995 | 5,185,748 | | 1994 | 5,154,986 | | 1993 | 5,117,803 | | 1992 | 5,075,050 | | 1991 | 5,023,076 | | 1990 | 4,964,515 | | 1989 | 4,917,784 | | 1988 | 4,882,139 | | 1987 | 4,850,382 | | 1986 | 4,823,914 | | 1985 | 4,802,758 | | 1984 | 4,785,404 | | 1983 | 4,772,101 | | 1982 | 4,755,517 | | 1981 | 4,731,625 | | 1980 | 4,706,505 | | 1979 | 4,684,518 | | 1978 | 4,671,729 | | 1977 | 4,667,917 | | 1976 | 4,680,366 | | 1975 | 4,703,772 | | 1974 | 4,702,405 | | 1973 | 4,673,744 | | 1972 | 4,635,987 | | 1971 | 4,597,418 | | 1970 | 4,564,145 | | 1969 | 4,513,988 | | 1968 | 4,446,360 | | 1967 | 4,373,584 | | 1966 | 4,302,743 | | 1965 | 4,241,081 | | 1964 | 4,175,596 | | 1963 | 4,090,405 | | 1962 | 3,987,452 | | 1961 | 3,871,554 | | 1960 | 3,778,708 |
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