| Year | Value | | 2022 | 14,775,496 | | 2021 | 14,424,717 | | 2020 | 14,076,752 | | 2019 | 13,728,596 | | 2018 | 13,384,012 | | 2017 | 13,044,649 | | 2016 | 12,710,056 | | 2015 | 12,383,941 | | 2014 | 12,065,787 | | 2013 | 11,750,494 | | 2012 | 11,438,460 | | 2011 | 11,128,890 | | 2010 | 10,820,101 | | 2009 | 10,513,195 | | 2008 | 10,211,594 | | 2007 | 9,917,175 | | 2006 | 9,629,821 | | 2005 | 9,351,211 | | 2004 | 9,080,850 | | 2003 | 8,818,285 | | 2002 | 8,563,371 | | 2001 | 8,313,779 | | 2000 | 8,068,707 | | 1999 | 7,827,050 | | 1998 | 7,587,511 | | 1997 | 7,351,215 | | 1996 | 7,119,438 | | 1995 | 6,893,814 | | 1994 | 6,676,136 | | 1993 | 6,467,292 | | 1992 | 6,268,243 | | 1991 | 6,078,585 | | 1990 | 5,896,690 | | 1989 | 5,722,986 | | 1988 | 5,557,278 | | 1987 | 5,398,398 | | 1986 | 5,246,816 | | 1985 | 5,101,070 | | 1984 | 4,959,283 | | 1983 | 4,821,383 | | 1982 | 4,686,381 | | 1981 | 4,554,099 | | 1980 | 4,424,114 | | 1979 | 4,295,829 | | 1978 | 4,169,848 | | 1977 | 4,046,766 | | 1976 | 3,926,778 | | 1975 | 3,809,764 | | 1974 | 3,695,584 | | 1973 | 3,584,299 | | 1972 | 3,476,039 | | 1971 | 3,371,075 | | 1970 | 3,270,999 | | 1969 | 3,176,494 | | 1968 | 3,086,629 | | 1967 | 3,001,173 | | 1966 | 2,919,675 | | 1965 | 2,841,601 | | 1964 | 2,766,294 | | 1963 | 2,693,253 | | 1962 | 2,622,418 | | 1961 | 2,553,648 | | 1960 | 2,486,782 |
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