| Year | Value | | 2022 | 13,776,698 | | 2021 | 13,461,888 | | 2020 | 13,146,362 | | 2019 | 12,835,028 | | 2018 | 12,531,808 | | 2017 | 12,230,339 | | 2016 | 11,930,899 | | 2015 | 11,642,959 | | 2014 | 11,368,451 | | 2013 | 11,101,350 | | 2012 | 10,840,334 | | 2011 | 10,576,932 | | 2010 | 10,309,031 | | 2009 | 10,043,737 | | 2008 | 9,781,996 | | 2007 | 9,523,168 | | 2006 | 9,270,066 | | 2005 | 9,026,299 | | 2004 | 8,791,853 | | 2003 | 8,567,992 | | 2002 | 8,372,306 | | 2001 | 8,223,941 | | 2000 | 8,109,989 | | 1999 | 8,009,587 | | 1998 | 7,914,645 | | 1997 | 7,666,732 | | 1996 | 6,715,510 | | 1995 | 5,686,897 | | 1994 | 6,732,665 | | 1993 | 7,904,740 | | 1992 | 7,657,208 | | 1991 | 7,485,681 | | 1990 | 7,319,962 | | 1989 | 7,141,974 | | 1988 | 6,953,975 | | 1987 | 6,735,829 | | 1986 | 6,497,804 | | 1985 | 6,266,752 | | 1984 | 6,056,729 | | 1983 | 5,859,396 | | 1982 | 5,652,900 | | 1981 | 5,441,966 | | 1980 | 5,247,532 | | 1979 | 5,074,374 | | 1978 | 4,921,953 | | 1977 | 4,783,252 | | 1976 | 4,648,207 | | 1975 | 4,515,756 | | 1974 | 4,386,369 | | 1973 | 4,259,484 | | 1972 | 4,135,579 | | 1971 | 4,015,403 | | 1970 | 3,896,367 | | 1969 | 3,777,879 | | 1968 | 3,662,010 | | 1967 | 3,549,461 | | 1966 | 3,444,021 | | 1965 | 3,348,631 | | 1964 | 3,263,640 | | 1963 | 3,191,311 | | 1962 | 3,122,124 | | 1961 | 3,046,654 | | 1960 | 2,966,162 |
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