| Year | Value | | 2022 | 14,122,229 | | 2021 | 13,680,195 | | 2020 | 13,271,220 | | 2019 | 12,871,350 | | 2018 | 12,481,366 | | 2017 | 12,106,338 | | 2016 | 11,744,300 | | 2015 | 11,402,256 | | 2014 | 11,073,008 | | 2013 | 10,746,578 | | 2012 | 10,423,431 | | 2011 | 10,096,679 | | 2010 | 9,763,997 | | 2009 | 9,406,877 | | 2008 | 9,039,556 | | 2007 | 8,719,116 | | 2006 | 8,446,822 | | 2005 | 8,196,975 | | 2004 | 7,988,705 | | 2003 | 7,816,290 | | 2002 | 7,620,095 | | 2001 | 7,400,884 | | 2000 | 7,199,785 | | 1999 | 7,011,607 | | 1998 | 6,833,029 | | 1997 | 6,677,053 | | 1996 | 6,530,604 | | 1995 | 6,384,534 | | 1994 | 6,257,517 | | 1993 | 6,138,874 | | 1992 | 6,005,825 | | 1991 | 5,877,133 | | 1990 | 5,765,942 | | 1989 | 5,656,590 | | 1988 | 5,547,512 | | 1987 | 5,441,521 | | 1986 | 5,335,920 | | 1985 | 5,234,312 | | 1984 | 5,132,942 | | 1983 | 5,032,926 | | 1982 | 4,937,778 | | 1981 | 4,853,556 | | 1980 | 4,782,505 | | 1979 | 4,706,305 | | 1978 | 4,616,750 | | 1977 | 4,526,803 | | 1976 | 4,440,307 | | 1975 | 4,354,237 | | 1974 | 4,262,967 | | 1973 | 4,166,644 | | 1972 | 4,072,946 | | 1971 | 4,005,731 | | 1970 | 3,943,153 | | 1969 | 3,858,959 | | 1968 | 3,774,341 | | 1967 | 3,692,384 | | 1966 | 3,613,110 | | 1965 | 3,534,481 | | 1964 | 3,455,840 | | 1963 | 3,378,993 | | 1962 | 3,302,753 | | 1961 | 3,223,742 | | 1960 | 3,141,456 |
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