Year | Value | 2022 | 16,189,513 | 2021 | 16,011,451 | 2020 | 15,907,709 | 2019 | 15,866,766 | 2018 | 15,882,521 | 2017 | 15,988,060 | 2016 | 16,164,346 | 2015 | 16,392,265 | 2014 | 16,661,023 | 2013 | 16,889,184 | 2012 | 17,042,161 | 2011 | 17,167,916 | 2010 | 17,231,035 | 2009 | 17,193,272 | 2008 | 17,089,991 | 2007 | 16,868,637 | 2006 | 16,505,790 | 2005 | 16,071,459 | 2004 | 15,595,613 | 2003 | 15,074,239 | 2002 | 14,561,639 | 2001 | 14,042,217 | 2000 | 13,482,438 | 1999 | 12,932,896 | 1998 | 12,426,644 | 1997 | 11,972,807 | 1996 | 11,582,862 | 1995 | 11,258,905 | 1994 | 10,980,394 | 1993 | 10,787,376 | 1992 | 10,611,254 | 1991 | 10,364,107 | 1990 | 10,044,468 | 1989 | 9,724,530 | 1988 | 9,462,994 | 1987 | 9,206,917 | 1986 | 8,931,575 | 1985 | 8,641,620 | 1984 | 8,354,261 | 1983 | 8,062,266 | 1982 | 7,771,998 | 1981 | 7,469,337 | 1980 | 7,196,357 | 1979 | 6,977,739 | 1978 | 6,791,259 | 1977 | 6,611,611 | 1976 | 6,389,306 | 1975 | 6,151,443 | 1974 | 5,925,596 | 1973 | 5,694,712 | 1972 | 5,463,205 | 1971 | 5,242,874 | 1970 | 5,025,471 | 1969 | 4,801,346 | 1968 | 4,586,090 | 1967 | 4,392,056 | 1966 | 4,218,501 | 1965 | 4,077,276 | 1964 | 3,973,179 | 1963 | 3,903,916 | 1962 | 3,863,906 | 1961 | 3,839,972 | 1960 | 3,822,421 |
|