Year | Value | 2022 | 35,123,991 | 2021 | 35,006,272 | 2020 | 34,900,402 | 2019 | 34,801,750 | 2018 | 34,680,632 | 2017 | 34,554,791 | 2016 | 34,452,635 | 2015 | 34,359,025 | 2014 | 34,233,592 | 2013 | 34,069,673 | 2012 | 33,890,643 | 2011 | 33,722,113 | 2010 | 33,553,356 | 2009 | 33,382,387 | 2008 | 33,205,372 | 2007 | 33,013,412 | 2006 | 32,802,688 | 2005 | 32,568,445 | 2004 | 32,317,296 | 2003 | 32,074,754 | 2002 | 31,843,184 | 2001 | 31,606,094 | 2000 | 31,370,713 | 1999 | 31,151,034 | 1998 | 30,984,879 | 1997 | 30,863,380 | 1996 | 30,745,655 | 1995 | 30,626,680 | 1994 | 30,504,379 | 1993 | 30,378,930 | 1992 | 30,236,232 | 1991 | 30,075,115 | 1990 | 29,801,207 | 1989 | 29,647,597 | 1988 | 29,485,857 | 1987 | 29,318,060 | 1986 | 29,151,152 | 1985 | 28,988,968 | 1984 | 28,827,905 | 1983 | 28,673,341 | 1982 | 28,512,437 | 1981 | 28,340,430 | 1980 | 28,171,415 | 1979 | 28,011,455 | 1978 | 27,867,627 | 1977 | 27,726,593 | 1976 | 27,591,720 | 1975 | 27,461,297 | 1974 | 27,308,859 | 1973 | 27,129,480 | 1972 | 26,924,779 | 1971 | 26,702,804 | 1970 | 26,478,606 | 1969 | 26,258,433 | 1968 | 26,035,701 | 1967 | 25,800,623 | 1966 | 25,549,168 | 1965 | 25,289,599 | 1964 | 25,023,265 | 1963 | 24,760,379 | 1962 | 24,515,732 | 1961 | 24,266,964 | 1960 | 24,022,048 |
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