Year | Value | 2022 | 37,065,315 | 2021 | 37,078,368 | 2020 | 37,026,935 | 2019 | 36,970,471 | 2018 | 37,160,263 | 2017 | 37,474,381 | 2016 | 37,967,022 | 2015 | 38,497,315 | 2014 | 38,873,010 | 2013 | 39,094,846 | 2012 | 39,226,967 | 2011 | 39,135,813 | 2010 | 39,100,961 | 2009 | 39,251,615 | 2008 | 39,479,984 | 2007 | 39,602,450 | 2006 | 39,755,040 | 2005 | 39,851,833 | 2004 | 39,676,019 | 2003 | 39,328,177 | 2002 | 38,942,627 | 2001 | 38,510,876 | 2000 | 38,030,680 | 1999 | 37,520,405 | 1998 | 36,988,392 | 1997 | 36,461,482 | 1996 | 36,163,701 | 1995 | 35,805,856 | 1994 | 35,395,045 | 1993 | 35,300,353 | 1992 | 35,337,117 | 1991 | 34,905,998 | 1990 | 33,801,468 | 1989 | 32,534,691 | 1988 | 31,284,267 | 1987 | 30,019,854 | 1986 | 28,977,279 | 1985 | 28,750,144 | 1984 | 28,880,484 | 1983 | 28,742,177 | 1982 | 28,581,711 | 1981 | 28,490,704 | 1980 | 28,237,576 | 1979 | 27,828,833 | 1978 | 27,465,996 | 1977 | 27,168,644 | 1976 | 26,938,577 | 1975 | 26,954,022 | 1974 | 27,254,832 | 1973 | 27,491,121 | 1972 | 27,542,846 | 1971 | 27,438,926 | 1970 | 26,983,348 | 1969 | 26,300,722 | 1968 | 25,746,135 | 1967 | 25,278,960 | 1966 | 24,685,947 | 1965 | 24,270,636 | 1964 | 23,818,434 | 1963 | 22,775,325 | 1962 | 21,471,629 | 1961 | 20,438,783 | 1960 | 19,632,704 |
|