Year | Value | 2022 | 11,891,472 | 2021 | 11,820,940 | 2020 | 11,787,772 | 2019 | 11,711,604 | 2018 | 11,765,806 | 2017 | 11,865,329 | 2016 | 12,007,485 | 2015 | 12,157,778 | 2014 | 12,262,513 | 2013 | 12,262,688 | 2012 | 12,158,365 | 2011 | 11,967,853 | 2010 | 11,757,230 | 2009 | 11,572,888 | 2008 | 11,443,380 | 2007 | 11,347,260 | 2006 | 11,291,020 | 2005 | 11,267,606 | 2004 | 11,241,840 | 2003 | 11,159,861 | 2002 | 11,005,513 | 2001 | 10,754,449 | 2000 | 10,453,691 | 1999 | 10,190,775 | 1998 | 10,003,408 | 1997 | 9,894,891 | 1996 | 9,926,336 | 1995 | 10,104,846 | 1994 | 10,302,533 | 1993 | 10,455,948 | 1992 | 10,553,840 | 1991 | 10,576,410 | 1990 | 10,592,379 | 1989 | 10,723,066 | 1988 | 10,960,417 | 1987 | 11,240,993 | 1986 | 11,529,983 | 1985 | 11,778,673 | 1984 | 11,918,904 | 1983 | 11,980,789 | 1982 | 12,007,921 | 1981 | 11,954,280 | 1980 | 11,825,555 | 1979 | 11,673,920 | 1978 | 11,482,575 | 1977 | 11,239,996 | 1976 | 11,126,415 | 1975 | 10,898,044 | 1974 | 10,382,701 | 1973 | 10,003,451 | 1972 | 9,882,265 | 1971 | 9,640,007 | 1970 | 9,255,505 | 1969 | 9,063,617 | 1968 | 8,845,276 | 1967 | 8,422,933 | 1966 | 7,873,866 | 1965 | 7,496,427 | 1964 | 7,260,841 | 1963 | 6,949,319 | 1962 | 6,601,661 | 1961 | 6,371,741 | 1960 | 6,218,580 |
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