| Year | Value | | 2022 | 9,550,437 | | 2021 | 9,380,379 | | 2020 | 9,290,154 | | 2019 | 9,242,232 | | 2018 | 9,240,768 | | 2017 | 9,218,161 | | 2016 | 9,143,741 | | 2015 | 8,899,155 | | 2014 | 8,560,121 | | 2013 | 8,256,941 | | 2012 | 7,941,885 | | 2011 | 7,700,755 | | 2010 | 7,765,323 | | 2009 | 7,908,488 | | 2008 | 7,955,100 | | 2007 | 8,001,919 | | 2006 | 8,025,954 | | 2005 | 7,941,028 | | 2004 | 7,799,393 | | 2003 | 7,650,944 | | 2002 | 7,509,816 | | 2001 | 7,397,855 | | 2000 | 7,316,388 | | 1999 | 7,250,794 | | 1998 | 7,220,120 | | 1997 | 7,200,276 | | 1996 | 7,125,812 | | 1995 | 6,994,951 | | 1994 | 6,833,119 | | 1993 | 6,671,528 | | 1992 | 6,529,246 | | 1991 | 6,430,574 | | 1990 | 6,348,117 | | 1989 | 6,154,113 | | 1988 | 5,760,423 | | 1987 | 5,276,417 | | 1986 | 4,793,596 | | 1985 | 4,402,295 | | 1984 | 4,338,346 | | 1983 | 4,635,223 | | 1982 | 5,070,881 | | 1981 | 5,480,833 | | 1980 | 5,777,587 | | 1979 | 5,916,632 | | 1978 | 5,941,513 | | 1977 | 5,932,492 | | 1976 | 5,926,184 | | 1975 | 5,924,419 | | 1974 | 5,902,705 | | 1973 | 5,860,431 | | 1972 | 5,815,192 | | 1971 | 5,769,221 | | 1970 | 5,702,109 | | 1969 | 5,595,161 | | 1968 | 5,450,690 | | 1967 | 5,275,714 | | 1966 | 5,078,885 | | 1965 | 4,863,385 | | 1964 | 4,654,865 | | 1963 | 4,495,275 | | 1962 | 4,363,710 | | 1961 | 4,241,771 | | 1960 | 4,147,546 |
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