| Year | Value | | 2022 | 10,828,271 | | 2021 | 10,788,833 | | 2020 | 10,724,223 | | 2019 | 10,564,689 | | 2018 | 10,435,807 | | 2017 | 10,241,524 | | 2016 | 10,157,117 | | 2015 | 9,956,969 | | 2014 | 9,490,294 | | 2013 | 9,147,992 | | 2012 | 9,043,833 | | 2011 | 8,824,883 | | 2010 | 8,485,748 | | 2009 | 8,252,883 | | 2008 | 7,972,511 | | 2007 | 7,551,034 | | 2006 | 7,056,441 | | 2005 | 6,718,823 | | 2004 | 6,515,995 | | 2003 | 6,262,689 | | 2002 | 6,007,071 | | 2001 | 5,845,955 | | 2000 | 5,720,017 | | 1999 | 5,580,545 | | 1998 | 5,460,300 | | 1997 | 5,369,743 | | 1996 | 5,318,908 | | 1995 | 5,298,291 | | 1994 | 5,354,297 | | 1993 | 5,422,141 | | 1992 | 5,480,108 | | 1991 | 5,578,648 | | 1990 | 5,634,374 | | 1989 | 5,600,911 | | 1988 | 5,699,031 | | 1987 | 5,822,955 | | 1986 | 5,766,597 | | 1985 | 5,759,142 | | 1984 | 5,837,588 | | 1983 | 5,718,195 | | 1982 | 5,528,141 | | 1981 | 5,479,191 | | 1980 | 5,377,922 | | 1979 | 5,194,263 | | 1978 | 5,087,249 | | 1977 | 5,103,552 | | 1976 | 5,121,955 | | 1975 | 5,119,071 | | 1974 | 5,093,543 | | 1973 | 5,044,323 | | 1972 | 4,955,598 | | 1971 | 4,792,227 | | 1970 | 4,633,925 | | 1969 | 4,510,409 | | 1968 | 4,342,939 | | 1967 | 4,207,073 | | 1966 | 4,112,681 | | 1965 | 3,983,340 | | 1964 | 3,889,258 | | 1963 | 3,895,651 | | 1962 | 3,881,892 | | 1961 | 3,834,536 | | 1960 | 3,833,465 |
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