Year | Value | 2022 | 26,293,363 | 2021 | 25,587,391 | 2020 | 24,843,416 | 2019 | 24,101,453 | 2018 | 23,371,666 | 2017 | 22,598,765 | 2016 | 21,783,765 | 2015 | 20,909,971 | 2014 | 19,993,762 | 2013 | 19,053,506 | 2012 | 18,161,246 | 2011 | 17,375,681 | 2010 | 16,622,044 | 2009 | 15,872,911 | 2008 | 15,140,832 | 2007 | 14,426,538 | 2006 | 13,778,740 | 2005 | 13,126,090 | 2004 | 12,427,674 | 2003 | 11,770,414 | 2002 | 11,186,970 | 2001 | 10,634,018 | 2000 | 10,119,521 | 1999 | 9,678,297 | 1998 | 9,280,897 | 1997 | 8,897,306 | 1996 | 8,527,037 | 1995 | 8,159,900 | 1994 | 7,790,069 | 1993 | 7,430,630 | 1992 | 7,131,383 | 1991 | 6,904,509 | 1990 | 6,682,852 | 1989 | 6,410,358 | 1988 | 6,109,708 | 1987 | 5,828,799 | 1986 | 5,552,583 | 1985 | 5,258,866 | 1984 | 4,960,276 | 1983 | 4,655,340 | 1982 | 4,356,702 | 1981 | 4,080,272 | 1980 | 3,827,869 | 1979 | 3,612,142 | 1978 | 3,419,488 | 1977 | 3,236,597 | 1976 | 3,072,155 | 1975 | 2,915,544 | 1974 | 2,760,263 | 1973 | 2,610,631 | 1972 | 2,479,954 | 1971 | 2,382,490 | 1970 | 2,306,694 | 1969 | 2,229,735 | 1968 | 2,144,870 | 1967 | 2,064,900 | 1966 | 2,000,353 | 1965 | 1,952,748 | 1964 | 1,926,121 | 1963 | 1,905,663 | 1962 | 1,873,495 | 1961 | 1,862,587 | 1960 | 1,903,809 |
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