Year | Value | 2022 | 20,043,631 | 2021 | 19,300,110 | 2020 | 18,550,893 | 2019 | 17,816,113 | 2018 | 17,121,549 | 2017 | 16,468,608 | 2016 | 15,858,218 | 2015 | 15,302,767 | 2014 | 14,789,797 | 2013 | 14,305,392 | 2012 | 13,851,904 | 2011 | 13,416,693 | 2010 | 13,009,577 | 2009 | 12,630,263 | 2008 | 12,266,975 | 2007 | 11,937,925 | 2006 | 11,630,056 | 2005 | 11,321,341 | 2004 | 11,024,144 | 2003 | 10,728,965 | 2002 | 10,416,791 | 2001 | 10,108,785 | 2000 | 9,826,228 | 1999 | 9,546,330 | 1998 | 9,263,926 | 1997 | 8,999,554 | 1996 | 8,748,629 | 1995 | 8,484,971 | 1994 | 8,196,330 | 1993 | 7,898,022 | 1992 | 7,623,989 | 1991 | 7,401,836 | 1990 | 7,219,262 | 1989 | 7,050,042 | 1988 | 6,893,694 | 1987 | 6,726,928 | 1986 | 6,541,701 | 1985 | 6,363,270 | 1984 | 6,196,106 | 1983 | 6,045,869 | 1982 | 5,917,608 | 1981 | 5,819,950 | 1980 | 5,746,545 | 1979 | 5,665,662 | 1978 | 5,561,987 | 1977 | 5,462,195 | 1976 | 5,370,404 | 1975 | 5,271,843 | 1974 | 5,170,485 | 1973 | 5,064,842 | 1972 | 4,958,708 | 1971 | 4,851,387 | 1970 | 4,741,454 | 1969 | 4,634,659 | 1968 | 4,530,534 | 1967 | 4,428,031 | 1966 | 4,328,900 | 1965 | 4,233,042 | 1964 | 4,139,765 | 1963 | 4,046,962 | 1962 | 3,954,079 | 1961 | 3,863,922 | 1960 | 3,775,748 |
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