| Year | Value | | 2022 | 13,215,687 | | 2021 | 12,776,240 | | 2020 | 12,343,418 | | 2019 | 11,901,559 | | 2018 | 11,464,659 | | 2017 | 11,050,642 | | 2016 | 10,670,959 | | 2015 | 10,322,697 | | 2014 | 9,999,253 | | 2013 | 9,704,376 | | 2012 | 9,433,910 | | 2011 | 9,177,023 | | 2010 | 8,922,356 | | 2009 | 8,652,357 | | 2008 | 8,382,078 | | 2007 | 8,146,734 | | 2006 | 7,941,153 | | 2005 | 7,748,499 | | 2004 | 7,573,867 | | 2003 | 7,403,732 | | 2002 | 7,208,339 | | 2001 | 6,995,062 | | 2000 | 6,784,807 | | 1999 | 6,587,995 | | 1998 | 6,409,368 | | 1997 | 6,248,655 | | 1996 | 6,100,797 | | 1995 | 5,962,937 | | 1994 | 5,848,621 | | 1993 | 5,750,088 | | 1992 | 5,645,374 | | 1991 | 5,534,607 | | 1990 | 5,424,541 | | 1989 | 5,314,825 | | 1988 | 5,209,000 | | 1987 | 5,105,209 | | 1986 | 4,999,526 | | 1985 | 4,908,879 | | 1984 | 4,827,558 | | 1983 | 4,743,748 | | 1982 | 4,654,872 | | 1981 | 4,558,090 | | 1980 | 4,476,804 | | 1979 | 4,392,519 | | 1978 | 4,280,940 | | 1977 | 4,170,095 | | 1976 | 4,068,095 | | 1975 | 3,965,076 | | 1974 | 3,860,449 | | 1973 | 3,759,052 | | 1972 | 3,662,675 | | 1971 | 3,570,564 | | 1970 | 3,482,979 | | 1969 | 3,401,535 | | 1968 | 3,324,930 | | 1967 | 3,252,217 | | 1966 | 3,182,162 | | 1965 | 3,111,345 | | 1964 | 3,039,775 | | 1963 | 2,969,183 | | 1962 | 2,899,418 | | 1961 | 2,830,030 | | 1960 | 2,764,311 |
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