Year | Value | 2022 | 25,463,940 | 2021 | 25,049,681 | 2020 | 24,594,476 | 2019 | 24,048,761 | 2018 | 23,466,372 | 2017 | 22,850,294 | 2016 | 22,200,294 | 2015 | 21,520,965 | 2014 | 20,814,041 | 2013 | 19,919,228 | 2012 | 18,840,448 | 2011 | 17,771,766 | 2010 | 16,739,788 | 2009 | 15,746,242 | 2008 | 14,996,934 | 2007 | 14,515,614 | 2006 | 14,102,289 | 2005 | 13,739,876 | 2004 | 13,437,271 | 2003 | 13,192,797 | 2002 | 12,987,649 | 2001 | 12,789,024 | 2000 | 12,572,817 | 1999 | 12,335,629 | 1998 | 12,075,865 | 1997 | 11,801,257 | 1996 | 11,538,848 | 1995 | 11,303,865 | 1994 | 11,085,424 | 1993 | 10,874,495 | 1992 | 10,668,864 | 1991 | 10,458,822 | 1990 | 10,239,173 | 1989 | 10,011,541 | 1988 | 9,776,228 | 1987 | 9,537,231 | 1986 | 9,305,711 | 1985 | 9,088,675 | 1984 | 8,885,988 | 1983 | 8,698,438 | 1982 | 8,523,594 | 1981 | 8,351,798 | 1980 | 8,176,855 | 1979 | 7,998,183 | 1978 | 7,813,479 | 1977 | 7,626,546 | 1976 | 7,450,552 | 1975 | 7,293,115 | 1974 | 7,154,655 | 1973 | 7,040,247 | 1972 | 6,942,309 | 1971 | 6,834,282 | 1970 | 6,700,576 | 1969 | 6,541,532 | 1968 | 6,350,614 | 1967 | 6,142,209 | 1966 | 5,952,801 | 1965 | 5,800,651 | 1964 | 5,679,505 | 1963 | 5,594,967 | 1962 | 5,536,433 | 1961 | 5,454,518 | 1960 | 5,317,665 |
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