| Year | Value | | 2022 | 14,110,094 | | 2021 | 13,869,979 | | 2020 | 13,603,275 | | 2019 | 13,273,090 | | 2018 | 12,890,036 | | 2017 | 12,495,689 | | 2016 | 12,111,011 | | 2015 | 11,732,538 | | 2014 | 11,356,595 | | 2013 | 10,991,057 | | 2012 | 10,636,306 | | 2011 | 10,290,770 | | 2010 | 9,959,941 | | 2009 | 9,645,401 | | 2008 | 9,310,896 | | 2007 | 8,965,839 | | 2006 | 8,618,924 | | 2005 | 8,277,061 | | 2004 | 7,954,523 | | 2003 | 7,668,559 | | 2002 | 7,423,182 | | 2001 | 7,209,211 | | 2000 | 7,013,653 | | 1999 | 6,827,147 | | 1998 | 6,648,740 | | 1997 | 6,472,396 | | 1996 | 6,295,931 | | 1995 | 6,116,847 | | 1994 | 5,936,866 | | 1993 | 5,767,304 | | 1992 | 5,614,621 | | 1991 | 5,475,649 | | 1990 | 5,351,432 | | 1989 | 5,241,652 | | 1988 | 5,137,546 | | 1987 | 5,033,274 | | 1986 | 4,927,810 | | 1985 | 4,820,361 | | 1984 | 4,710,009 | | 1983 | 4,594,739 | | 1982 | 4,474,556 | | 1981 | 4,351,721 | | 1980 | 4,226,576 | | 1979 | 4,097,518 | | 1978 | 3,966,198 | | 1977 | 3,839,781 | | 1976 | 3,725,517 | | 1975 | 3,627,511 | | 1974 | 3,545,359 | | 1973 | 3,477,052 | | 1972 | 3,418,778 | | 1971 | 3,362,338 | | 1970 | 3,303,821 | | 1969 | 3,240,860 | | 1968 | 3,170,296 | | 1967 | 3,093,628 | | 1966 | 3,014,731 | | 1965 | 2,936,595 | | 1964 | 2,860,701 | | 1963 | 2,789,001 | | 1962 | 2,721,320 | | 1961 | 2,654,621 | | 1960 | 2,586,226 |
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