Year | Value | 2022 | 33,876,555 | 2021 | 33,913,559 | 2020 | 33,948,108 | 2019 | 33,835,792 | 2018 | 33,662,065 | 2017 | 33,477,363 | 2016 | 33,270,675 | 2015 | 33,041,408 | 2014 | 32,802,913 | 2013 | 32,584,323 | 2012 | 32,390,769 | 2011 | 32,189,405 | 2010 | 31,960,504 | 2009 | 31,732,553 | 2008 | 31,516,343 | 2007 | 31,293,296 | 2006 | 31,072,904 | 2005 | 30,867,389 | 2004 | 30,678,379 | 2003 | 30,526,615 | 2002 | 30,406,325 | 2001 | 30,296,779 | 2000 | 30,197,282 | 1999 | 30,105,897 | 1998 | 30,020,559 | 1997 | 29,946,015 | 1996 | 29,879,838 | 1995 | 29,811,848 | 1994 | 29,738,839 | 1993 | 29,668,038 | 1992 | 29,600,247 | 1991 | 29,521,874 | 1990 | 29,430,816 | 1989 | 29,342,658 | 1988 | 29,265,403 | 1987 | 29,197,428 | 1986 | 29,131,292 | 1985 | 29,059,522 | 1984 | 28,988,606 | 1983 | 28,937,208 | 1982 | 28,923,024 | 1981 | 28,930,335 | 1980 | 28,918,046 | 1979 | 28,883,344 | 1978 | 28,859,166 | 1977 | 28,860,651 | 1976 | 28,875,455 | 1975 | 28,889,090 | 1974 | 28,898,904 | 1973 | 28,890,515 | 1972 | 28,845,477 | 1971 | 28,759,083 | 1970 | 28,650,499 | 1969 | 28,546,014 | 1968 | 28,437,297 | 1967 | 28,310,001 | 1966 | 28,168,529 | 1965 | 28,024,396 | 1964 | 27,856,762 | 1963 | 27,689,292 | 1962 | 27,496,932 | 1961 | 27,280,397 | 1960 | 27,090,467 |
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