Year | Value | 2022 | 28,118,908 | 2021 | 27,124,861 | 2020 | 26,158,712 | 2019 | 25,246,155 | 2018 | 24,433,071 | 2017 | 23,716,934 | 2016 | 23,046,577 | 2015 | 22,398,791 | 2014 | 21,771,561 | 2013 | 21,138,465 | 2012 | 20,490,852 | 2011 | 19,837,280 | 2010 | 19,203,816 | 2009 | 18,608,294 | 2008 | 18,054,552 | 2007 | 17,552,713 | 2006 | 17,097,276 | 2005 | 16,669,406 | 2004 | 16,264,278 | 2003 | 15,865,769 | 2002 | 15,450,039 | 2001 | 15,033,398 | 2000 | 14,648,048 | 1999 | 14,268,608 | 1998 | 13,868,122 | 1997 | 13,471,018 | 1996 | 13,082,701 | 1995 | 12,671,488 | 1994 | 12,215,311 | 1993 | 11,739,128 | 1992 | 11,305,220 | 1991 | 10,944,787 | 1990 | 10,636,648 | 1989 | 10,364,012 | 1988 | 10,121,749 | 1987 | 9,868,783 | 1986 | 9,597,607 | 1985 | 9,338,311 | 1984 | 9,094,724 | 1983 | 8,869,278 | 1982 | 8,672,264 | 1981 | 8,517,720 | 1980 | 8,396,599 | 1979 | 8,270,628 | 1978 | 8,123,307 | 1977 | 7,982,368 | 1976 | 7,860,533 | 1975 | 7,743,500 | 1974 | 7,620,923 | 1973 | 7,489,739 | 1972 | 7,355,390 | 1971 | 7,226,345 | 1970 | 7,095,732 | 1969 | 6,954,460 | 1968 | 6,806,347 | 1967 | 6,656,680 | 1966 | 6,510,999 | 1965 | 6,370,683 | 1964 | 6,234,584 | 1963 | 6,102,789 | 1962 | 5,974,353 | 1961 | 5,847,637 | 1960 | 5,723,376 |
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