| Year | Value | | 2022 | 6,241,094 | | 2021 | 6,104,720 | | 2020 | 5,979,275 | | 2019 | 5,825,321 | | 2018 | 5,639,776 | | 2017 | 5,448,813 | | 2016 | 5,270,998 | | 2015 | 5,099,133 | | 2014 | 4,924,250 | | 2013 | 4,745,950 | | 2012 | 4,565,317 | | 2011 | 4,383,165 | | 2010 | 4,208,622 | | 2009 | 4,045,686 | | 2008 | 3,871,354 | | 2007 | 3,697,663 | | 2006 | 3,525,709 | | 2005 | 3,356,873 | | 2004 | 3,197,763 | | 2003 | 3,050,457 | | 2002 | 2,910,492 | | 2001 | 2,775,705 | | 2000 | 2,651,638 | | 1999 | 2,539,884 | | 1998 | 2,438,442 | | 1997 | 2,342,909 | | 1996 | 2,248,684 | | 1995 | 2,154,264 | | 1994 | 2,059,793 | | 1993 | 1,969,050 | | 1992 | 1,884,757 | | 1991 | 1,804,514 | | 1990 | 1,727,363 | | 1989 | 1,651,715 | | 1988 | 1,578,716 | | 1987 | 1,510,243 | | 1986 | 1,445,372 | | 1985 | 1,385,049 | | 1984 | 1,329,543 | | 1983 | 1,277,668 | | 1982 | 1,228,115 | | 1981 | 1,181,681 | | 1980 | 1,134,801 | | 1979 | 1,079,321 | | 1978 | 1,018,683 | | 1977 | 959,263 | | 1976 | 902,055 | | 1975 | 849,115 | | 1974 | 801,885 | | 1973 | 759,808 | | 1972 | 719,489 | | 1971 | 680,937 | | 1970 | 649,499 | | 1969 | 622,771 | | 1968 | 594,291 | | 1967 | 564,455 | | 1966 | 535,075 | | 1965 | 508,029 | | 1964 | 485,133 | | 1963 | 466,217 | | 1962 | 450,419 | | 1961 | 438,729 | | 1960 | 431,045 |
|