Year | Value | 2024 | 26,095,271 | 2023 | 25,818,556 | 2022 | 25,533,693 | 2021 | 25,273,270 | 2020 | 25,013,101 | 2019 | 24,664,044 | 2018 | 24,229,130 | 2017 | 23,789,069 | 2016 | 23,448,707 | 2015 | 23,221,563 | 2014 | 23,026,431 | 2013 | 22,827,016 | 2012 | 22,616,962 | 2011 | 22,396,798 | 2010 | 22,163,441 | 2009 | 21,918,269 | 2008 | 21,670,024 | 2007 | 21,416,887 | 2006 | 21,153,219 | 2005 | 20,880,218 | 2004 | 20,595,401 | 2003 | 20,301,319 | 2002 | 20,005,151 | 2001 | 19,708,939 | 2000 | 19,411,115 | 1999 | 19,104,954 | 1998 | 18,784,170 | 1997 | 18,458,959 | 1996 | 18,140,058 | 1995 | 17,821,401 | 1994 | 17,493,607 | 1993 | 17,162,346 | 1992 | 16,834,498 | 1991 | 16,515,771 | 1990 | 16,197,632 | 1989 | 15,875,265 | 1988 | 15,560,724 | 1987 | 15,252,450 | 1986 | 14,948,029 | 1985 | 14,646,940 | 1984 | 14,336,946 | 1983 | 14,011,464 | 1982 | 13,687,577 | 1981 | 13,375,805 | 1980 | 13,072,046 | 1979 | 12,777,886 | 1978 | 12,494,975 | 1977 | 12,215,636 | 1976 | 11,946,933 | 1975 | 11,688,282 |
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