Year | Value | 2022 | 26,569,220 | 2021 | 30,569,541 | 2020 | 30,719,437 | 2019 | 30,836,427 | 2018 | 30,946,609 | 2017 | 31,043,768 | 2016 | 31,122,532 | 2015 | 31,183,829 | 2014 | 31,223,300 | 2013 | 31,330,995 | 2012 | 31,360,012 | 2011 | 31,395,053 | 2010 | 31,465,493 | 2009 | 31,547,453 | 2008 | 31,605,908 | 2007 | 31,694,730 | 2006 | 31,801,190 | 2005 | 31,932,595 | 2004 | 32,075,876 | 2003 | 32,238,837 | 2002 | 32,432,068 | 2001 | 32,692,860 | 2000 | 33,019,561 | 1999 | 33,334,234 | 1998 | 33,630,412 | 1997 | 33,913,054 | 1996 | 34,203,620 | 1995 | 34,488,335 | 1994 | 34,741,647 | 1993 | 34,894,318 | 1992 | 34,854,720 | 1991 | 34,734,254 | 1990 | 34,641,142 | 1989 | 34,541,910 | 1988 | 34,209,429 | 1987 | 33,766,182 | 1986 | 33,344,880 | 1985 | 32,933,625 | 1984 | 32,533,314 | 1983 | 32,110,163 | 1982 | 31,693,551 | 1981 | 31,287,683 | 1980 | 30,830,410 | 1979 | 30,381,527 | 1978 | 29,936,958 | 1977 | 29,494,026 | 1976 | 29,032,134 | 1975 | 28,547,659 | 1974 | 28,043,754 | 1973 | 27,525,603 | 1972 | 26,996,035 | 1971 | 26,441,505 | 1970 | 25,923,596 | 1969 | 25,394,816 | 1968 | 24,808,525 | 1967 | 24,203,291 | 1966 | 23,591,239 | 1965 | 22,988,108 | 1964 | 22,380,820 | 1963 | 21,798,938 | 1962 | 21,213,021 | 1961 | 20,616,692 | 1960 | 20,011,652 |
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