Year | Value | 2022 | 20,152,833 | 2021 | 19,699,381 | 2020 | 19,126,053 | 2019 | 18,568,208 | 2018 | 18,043,594 | 2017 | 17,534,054 | 2016 | 17,024,492 | 2015 | 16,532,812 | 2014 | 16,076,262 | 2013 | 15,653,838 | 2012 | 15,256,284 | 2011 | 14,881,151 | 2010 | 14,525,493 | 2009 | 14,176,984 | 2008 | 13,820,352 | 2007 | 13,457,287 | 2006 | 13,105,186 | 2005 | 12,762,679 | 2004 | 12,442,772 | 2003 | 12,145,329 | 2002 | 11,857,926 | 2001 | 11,589,080 | 2000 | 11,336,679 | 1999 | 11,069,221 | 1998 | 10,770,547 | 1997 | 10,473,666 | 1996 | 10,196,043 | 1995 | 9,882,585 | 1994 | 9,518,116 | 1993 | 9,187,034 | 1992 | 8,911,978 | 1991 | 8,716,471 | 1990 | 8,642,745 | 1989 | 8,603,705 | 1988 | 8,629,543 | 1987 | 8,689,461 | 1986 | 8,665,291 | 1985 | 8,538,666 | 1984 | 8,329,058 | 1983 | 8,035,708 | 1982 | 7,729,558 | 1981 | 7,496,669 | 1980 | 7,392,191 | 1979 | 7,361,514 | 1978 | 7,362,857 | 1977 | 7,360,045 | 1976 | 7,289,705 | 1975 | 7,144,630 | 1974 | 6,947,437 | 1973 | 6,724,344 | 1972 | 6,478,307 | 1971 | 6,236,853 | 1970 | 6,008,867 | 1969 | 5,798,326 | 1968 | 5,621,793 | 1967 | 5,454,264 | 1966 | 5,291,240 | 1965 | 5,163,360 | 1964 | 5,084,275 | 1963 | 5,025,741 | 1962 | 5,000,132 | 1961 | 4,996,364 | 1960 | 4,978,575 |
|