Year | Value | 2022 | 27,439,410 | 2021 | 27,650,885 | 2020 | 27,435,059 | 2019 | 26,873,016 | 2018 | 26,148,831 | 2017 | 25,427,094 | 2016 | 24,769,230 | 2015 | 24,235,332 | 2014 | 23,820,452 | 2013 | 23,490,481 | 2012 | 23,140,966 | 2011 | 22,688,379 | 2010 | 22,157,943 | 2009 | 21,513,052 | 2008 | 20,839,832 | 2007 | 20,147,214 | 2006 | 19,443,833 | 2005 | 18,729,461 | 2004 | 18,037,075 | 2003 | 17,417,507 | 2002 | 16,894,325 | 2001 | 16,406,961 | 2000 | 15,982,743 | 1999 | 15,811,275 | 1998 | 15,962,038 | 1997 | 16,327,726 | 1996 | 16,737,465 | 1995 | 16,949,004 | 1994 | 16,794,937 | 1993 | 16,413,999 | 1992 | 15,930,077 | 1991 | 15,426,854 | 1990 | 14,944,884 | 1989 | 14,433,638 | 1988 | 13,929,047 | 1987 | 13,436,355 | 1986 | 12,965,053 | 1985 | 12,542,431 | 1984 | 12,128,274 | 1983 | 11,702,528 | 1982 | 11,265,007 | 1981 | 10,824,876 | 1980 | 10,404,060 | 1979 | 10,005,382 | 1978 | 9,660,349 | 1977 | 9,342,337 | 1976 | 9,044,799 | 1975 | 8,775,812 | 1974 | 8,516,379 | 1973 | 8,272,548 | 1972 | 8,050,146 | 1971 | 7,833,070 | 1970 | 7,622,647 | 1969 | 7,400,332 | 1968 | 7,156,023 | 1967 | 6,892,867 | 1966 | 6,626,489 | 1965 | 6,376,736 | 1964 | 6,114,942 | 1963 | 5,881,497 | 1962 | 5,696,426 | 1961 | 5,502,528 | 1960 | 5,299,597 |
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