| Year | Value | | 2022 | 11,359,649 | | 2021 | 11,227,528 | | 2020 | 11,089,900 | | 2019 | 10,942,954 | | 2018 | 10,784,991 | | 2017 | 10,621,656 | | 2016 | 10,452,268 | | 2015 | 10,281,807 | | 2014 | 10,110,460 | | 2013 | 9,935,338 | | 2012 | 9,755,929 | | 2011 | 9,575,556 | | 2010 | 9,396,374 | | 2009 | 9,220,494 | | 2008 | 9,049,269 | | 2007 | 8,881,597 | | 2006 | 8,717,389 | | 2005 | 8,558,422 | | 2004 | 8,479,480 | | 2003 | 8,401,539 | | 2002 | 8,326,997 | | 2001 | 8,254,958 | | 2000 | 8,182,768 | | 1999 | 8,110,431 | | 1998 | 8,035,333 | | 1997 | 7,952,345 | | 1996 | 7,861,076 | | 1995 | 7,767,350 | | 1994 | 7,673,358 | | 1993 | 7,625,954 | | 1992 | 7,574,578 | | 1991 | 7,510,862 | | 1990 | 7,435,009 | | 1989 | 7,352,051 | | 1988 | 7,261,836 | | 1987 | 7,167,371 | | 1986 | 7,063,038 | | 1985 | 6,945,734 | | 1984 | 6,822,317 | | 1983 | 6,695,834 | | 1982 | 6,566,136 | | 1981 | 6,435,873 | | 1980 | 6,306,012 | | 1979 | 6,177,835 | | 1978 | 6,052,359 | | 1977 | 5,927,787 | | 1976 | 5,806,739 | | 1975 | 5,687,496 | | 1974 | 5,564,304 | | 1973 | 5,439,538 | | 1972 | 5,317,415 | | 1971 | 5,211,453 | | 1970 | 5,127,838 | | 1969 | 5,072,564 | | 1968 | 5,050,645 | | 1967 | 5,044,228 | | 1966 | 5,036,754 | | 1965 | 5,019,280 | | 1964 | 4,989,125 | | 1963 | 4,948,903 | | 1962 | 4,902,782 | | 1961 | 4,853,778 | | 1960 | 4,798,172 |
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