| Year | Value | | 2022 | 11,186,771 | | 2021 | 10,844,239 | | 2020 | 10,505,701 | | 2019 | 10,179,843 | | 2018 | 9,865,821 | | 2017 | 9,556,879 | | 2016 | 9,254,197 | | 2015 | 8,963,345 | | 2014 | 8,685,277 | | 2013 | 8,413,823 | | 2012 | 8,171,646 | | 2011 | 7,936,902 | | 2010 | 7,684,411 | | 2009 | 7,438,969 | | 2008 | 7,201,073 | | 2007 | 6,968,725 | | 2006 | 6,742,621 | | 2005 | 6,523,607 | | 2004 | 6,311,824 | | 2003 | 6,109,536 | | 2002 | 5,917,677 | | 2001 | 5,736,653 | | 2000 | 5,568,260 | | 1999 | 5,411,435 | | 1998 | 5,267,199 | | 1997 | 5,140,279 | | 1996 | 5,030,238 | | 1995 | 4,928,104 | | 1994 | 4,825,817 | | 1993 | 4,725,002 | | 1992 | 4,629,016 | | 1991 | 4,538,008 | | 1990 | 4,450,642 | | 1989 | 4,367,225 | | 1988 | 4,290,716 | | 1987 | 4,220,667 | | 1986 | 4,152,492 | | 1985 | 4,080,769 | | 1984 | 4,003,570 | | 1983 | 3,921,975 | | 1982 | 3,839,338 | | 1981 | 3,758,331 | | 1980 | 3,678,619 | | 1979 | 3,601,287 | | 1978 | 3,528,199 | | 1977 | 3,458,599 | | 1976 | 3,393,716 | | 1975 | 3,332,235 | | 1974 | 3,271,722 | | 1973 | 3,213,234 | | 1972 | 3,157,869 | | 1971 | 3,107,103 | | 1970 | 3,058,929 | | 1969 | 3,011,901 | | 1968 | 2,966,695 | | 1967 | 2,922,787 | | 1966 | 2,880,490 | | 1965 | 2,838,908 | | 1964 | 2,797,894 | | 1963 | 2,757,968 | | 1962 | 2,718,510 | | 1961 | 2,679,459 | | 1960 | 2,640,944 |
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