Year | Value | 2022 | 33,169,026 | 2021 | 32,708,277 | 2020 | 32,381,464 | 2019 | 32,005,477 | 2018 | 31,494,491 | 2017 | 30,940,313 | 2016 | 30,309,997 | 2015 | 29,621,042 | 2014 | 28,907,552 | 2013 | 28,225,790 | 2012 | 27,617,274 | 2011 | 27,072,916 | 2010 | 26,565,994 | 2009 | 26,013,714 | 2008 | 25,375,277 | 2007 | 24,697,686 | 2006 | 24,035,320 | 2005 | 23,450,481 | 2004 | 22,986,615 | 2003 | 22,590,088 | 2002 | 22,208,079 | 2001 | 21,823,886 | 2000 | 21,437,978 | 1999 | 21,041,578 | 1998 | 20,646,215 | 1997 | 20,269,198 | 1996 | 19,901,069 | 1995 | 19,547,007 | 1994 | 19,221,949 | 1993 | 18,881,697 | 1992 | 18,570,361 | 1991 | 18,240,116 | 1990 | 17,806,417 | 1989 | 17,344,012 | 1988 | 16,892,944 | 1987 | 16,485,453 | 1986 | 16,087,519 | 1985 | 15,695,954 | 1984 | 15,318,328 | 1983 | 14,959,682 | 1982 | 14,609,237 | 1981 | 14,271,696 | 1980 | 13,944,253 | 1979 | 13,615,223 | 1978 | 13,283,747 | 1977 | 12,942,771 | 1976 | 12,602,416 | 1975 | 12,277,843 | 1974 | 11,973,174 | 1973 | 11,695,530 | 1972 | 11,434,859 | 1971 | 11,192,773 | 1970 | 10,967,380 | 1969 | 10,758,492 | 1968 | 10,557,555 | 1967 | 10,357,064 | 1966 | 10,170,872 | 1965 | 9,995,778 | 1964 | 9,819,458 | 1963 | 9,631,390 | 1962 | 9,436,172 | 1961 | 9,244,843 | 1960 | 9,080,716 |
|