Year | Value | 2022 | 29,458,365 | 2021 | 28,600,631 | 2020 | 27,729,254 | 2019 | 26,851,663 | 2018 | 25,975,625 | 2017 | 25,087,498 | 2016 | 24,204,362 | 2015 | 23,371,807 | 2014 | 22,583,439 | 2013 | 21,818,466 | 2012 | 21,090,907 | 2011 | 20,368,307 | 2010 | 19,660,359 | 2009 | 18,986,732 | 2008 | 18,331,588 | 2007 | 17,743,955 | 2006 | 17,207,639 | 2005 | 16,673,829 | 2004 | 16,177,519 | 2003 | 15,712,151 | 2002 | 15,243,316 | 2001 | 14,796,110 | 2000 | 14,395,699 | 1999 | 14,008,671 | 1998 | 13,625,271 | 1997 | 13,278,170 | 1996 | 12,980,861 | 1995 | 12,678,902 | 1994 | 12,312,755 | 1993 | 11,925,018 | 1992 | 11,551,008 | 1991 | 11,202,017 | 1990 | 10,901,059 | 1989 | 10,611,257 | 1988 | 10,331,211 | 1987 | 10,065,392 | 1986 | 9,791,317 | 1985 | 9,511,188 | 1984 | 9,213,533 | 1983 | 8,912,447 | 1982 | 8,644,999 | 1981 | 8,432,266 | 1980 | 8,261,795 | 1979 | 8,090,091 | 1978 | 7,889,414 | 1977 | 7,685,208 | 1976 | 7,493,380 | 1975 | 7,300,429 | 1974 | 7,114,198 | 1973 | 6,949,878 | 1972 | 6,812,282 | 1971 | 6,682,982 | 1970 | 6,547,910 | 1969 | 6,414,175 | 1968 | 6,281,865 | 1967 | 6,147,060 | 1966 | 6,016,347 | 1965 | 5,894,353 | 1964 | 5,776,535 | 1963 | 5,659,901 | 1962 | 5,545,173 | 1961 | 5,431,663 | 1960 | 5,317,183 |
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