| Year | Value | | 2022 | 8,119,996 | | 2021 | 7,952,164 | | 2020 | 7,771,972 | | 2019 | 7,585,029 | | 2018 | 7,408,061 | | 2017 | 7,247,172 | | 2016 | 7,098,722 | | 2015 | 6,965,516 | | 2014 | 6,845,719 | | 2013 | 6,730,769 | | 2012 | 6,627,272 | | 2011 | 6,545,672 | | 2010 | 6,481,867 | | 2009 | 6,433,066 | | 2008 | 6,392,131 | | 2007 | 6,340,862 | | 2006 | 6,266,821 | | 2005 | 6,167,565 | | 2004 | 6,042,851 | | 2003 | 5,896,748 | | 2002 | 5,737,226 | | 2001 | 5,570,282 | | 2000 | 5,400,943 | | 1999 | 5,232,422 | | 1998 | 5,065,384 | | 1997 | 4,902,089 | | 1996 | 4,744,876 | | 1995 | 4,593,403 | | 1994 | 4,447,759 | | 1993 | 4,293,786 | | 1992 | 4,121,464 | | 1991 | 3,938,152 | | 1990 | 3,758,783 | | 1989 | 3,592,771 | | 1988 | 3,452,610 | | 1987 | 3,348,522 | | 1986 | 3,271,042 | | 1985 | 3,201,226 | | 1984 | 3,127,430 | | 1983 | 3,051,062 | | 1982 | 2,968,562 | | 1981 | 2,879,996 | | 1980 | 2,786,798 | | 1979 | 2,692,724 | | 1978 | 2,606,124 | | 1977 | 2,531,595 | | 1976 | 2,468,500 | | 1975 | 2,417,222 | | 1974 | 2,374,766 | | 1973 | 2,334,939 | | 1972 | 2,294,523 | | 1971 | 2,251,660 | | 1970 | 2,206,276 | | 1969 | 2,158,801 | | 1968 | 2,107,769 | | 1967 | 2,052,070 | | 1966 | 1,992,901 | | 1965 | 1,931,106 | | 1964 | 1,867,123 | | 1963 | 1,803,716 | | 1962 | 1,744,718 | | 1961 | 1,693,072 | | 1960 | 1,648,746 |
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