Year | Value | 2022 | 33,980,306 | 2021 | 33,010,689 | 2020 | 32,035,982 | 2019 | 31,046,592 | 2018 | 30,030,637 | 2017 | 28,977,539 | 2016 | 27,914,544 | 2015 | 26,825,929 | 2014 | 25,747,369 | 2013 | 24,757,687 | 2012 | 23,870,816 | 2011 | 23,086,347 | 2010 | 22,373,302 | 2009 | 21,709,202 | 2008 | 21,081,601 | 2007 | 20,466,431 | 2006 | 19,855,235 | 2005 | 19,254,931 | 2004 | 18,663,589 | 2003 | 18,080,801 | 2002 | 17,510,365 | 2001 | 16,945,638 | 2000 | 16,384,536 | 1999 | 15,839,667 | 1998 | 15,318,148 | 1997 | 14,831,251 | 1996 | 14,405,605 | 1995 | 14,024,697 | 1994 | 13,668,442 | 1993 | 13,351,784 | 1992 | 13,058,049 | 1991 | 12,751,255 | 1990 | 12,426,897 | 1989 | 12,077,624 | 1988 | 11,734,605 | 1987 | 11,433,568 | 1986 | 11,156,988 | 1985 | 10,925,470 | 1984 | 10,739,325 | 1983 | 10,551,133 | 1982 | 10,306,728 | 1981 | 10,011,950 | 1980 | 9,710,063 | 1979 | 9,416,926 | 1978 | 9,143,960 | 1977 | 8,903,905 | 1976 | 8,696,126 | 1975 | 8,493,124 | 1974 | 8,290,286 | 1973 | 8,097,434 | 1972 | 7,919,416 | 1971 | 7,752,801 | 1970 | 7,594,546 | 1969 | 7,445,807 | 1968 | 7,300,722 | 1967 | 7,157,842 | 1966 | 7,019,074 | 1965 | 6,883,125 | 1964 | 6,749,130 | 1963 | 6,618,444 | 1962 | 6,491,021 | 1961 | 6,366,898 | 1960 | 6,245,686 |
|