| Year | Value | | 2022 | 7,933,581 | | 2021 | 7,728,504 | | 2020 | 7,454,655 | | 2019 | 7,227,138 | | 2018 | 6,996,163 | | 2017 | 6,638,861 | | 2016 | 6,201,121 | | 2015 | 5,903,399 | | 2014 | 5,741,158 | | 2013 | 5,528,630 | | 2012 | 5,311,269 | | 2011 | 5,174,820 | | 2010 | 5,057,149 | | 2009 | 4,921,317 | | 2008 | 4,817,185 | | 2007 | 4,743,650 | | 2006 | 4,693,552 | | 2005 | 4,655,966 | | 2004 | 4,688,706 | | 2003 | 4,725,087 | | 2002 | 4,750,520 | | 2001 | 4,824,011 | | 2000 | 4,874,468 | | 1999 | 4,832,085 | | 1998 | 4,887,756 | | 1997 | 4,973,557 | | 1996 | 4,917,257 | | 1995 | 4,910,441 | | 1994 | 4,974,884 | | 1993 | 4,862,354 | | 1992 | 4,675,451 | | 1991 | 4,603,974 | | 1990 | 4,514,265 | | 1989 | 4,395,530 | | 1988 | 4,347,676 | | 1987 | 4,368,791 | | 1986 | 4,382,016 | | 1985 | 4,379,112 | | 1984 | 4,352,816 | | 1983 | 4,301,253 | | 1982 | 4,220,457 | | 1981 | 4,083,369 | | 1980 | 3,948,229 | | 1979 | 3,825,705 | | 1978 | 3,660,155 | | 1977 | 3,527,522 | | 1976 | 3,436,785 | | 1975 | 3,339,158 | | 1974 | 3,274,489 | | 1973 | 3,276,582 | | 1972 | 3,255,920 | | 1971 | 3,219,639 | | 1970 | 3,218,616 | | 1969 | 3,206,767 | | 1968 | 3,142,498 | | 1967 | 3,045,208 | | 1966 | 2,980,343 | | 1965 | 2,929,145 | | 1964 | 2,859,831 | | 1963 | 2,803,929 | | 1962 | 2,762,829 | | 1961 | 2,691,523 | | 1960 | 2,600,301 |
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