| Year | Value | | 2022 | 2,874,177 | | 2021 | 2,962,612 | | 2020 | 3,004,845 | | 2019 | 3,037,846 | | 2018 | 3,065,922 | | 2017 | 3,093,250 | | 2016 | 3,119,072 | | 2015 | 3,143,538 | | 2014 | 3,167,188 | | 2013 | 3,190,260 | | 2012 | 3,213,956 | | 2011 | 3,239,791 | | 2010 | 3,281,657 | | 2009 | 3,311,055 | | 2008 | 3,340,676 | | 2007 | 3,371,315 | | 2006 | 3,401,540 | | 2005 | 3,431,459 | | 2004 | 3,458,352 | | 2003 | 3,483,188 | | 2002 | 3,507,248 | | 2001 | 3,527,214 | | 2000 | 3,550,045 | | 1999 | 3,578,297 | | 1998 | 3,608,149 | | 1997 | 3,638,876 | | 1996 | 3,666,063 | | 1995 | 3,686,784 | | 1994 | 3,756,869 | | 1993 | 3,756,954 | | 1992 | 3,748,201 | | 1991 | 3,740,395 | | 1990 | 3,763,187 | | 1989 | 3,791,865 | | 1988 | 3,818,332 | | 1987 | 3,842,412 | | 1986 | 3,862,125 | | 1985 | 3,876,491 | | 1984 | 3,899,373 | | 1983 | 3,919,132 | | 1982 | 3,934,867 | | 1981 | 3,946,643 | | 1980 | 3,964,731 | | 1979 | 3,993,081 | | 1978 | 4,018,166 | | 1977 | 4,040,529 | | 1976 | 4,059,390 | | 1975 | 4,073,741 | | 1974 | 4,096,462 | | 1973 | 4,117,531 | | 1972 | 4,137,219 | | 1971 | 4,155,273 | | 1970 | 4,201,048 | | 1969 | 4,263,605 | | 1968 | 4,322,705 | | 1967 | 4,377,262 | | 1966 | 4,427,358 | | 1965 | 4,470,316 | | 1964 | 4,523,079 | | 1963 | 4,571,634 | | 1962 | 4,616,088 | | 1961 | 4,655,039 | | 1960 | 4,687,451 |
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