| Year | Value | | 2022 | 9,107,929 | | 2021 | 9,228,498 | | 2020 | 9,417,809 | | 2019 | 9,526,542 | | 2018 | 9,626,421 | | 2017 | 9,678,913 | | 2016 | 9,695,859 | | 2015 | 9,697,341 | | 2014 | 9,712,616 | | 2013 | 9,755,785 | | 2012 | 9,821,142 | | 2011 | 9,868,661 | | 2010 | 9,906,973 | | 2009 | 9,939,513 | | 2008 | 9,942,042 | | 2007 | 9,892,145 | | 2006 | 9,833,662 | | 2005 | 9,790,875 | | 2004 | 9,734,536 | | 2003 | 9,649,548 | | 2002 | 9,571,040 | | 2001 | 9,502,874 | | 2000 | 9,452,765 | | 1999 | 9,421,210 | | 1998 | 9,419,517 | | 1997 | 9,455,992 | | 1996 | 9,528,068 | | 1995 | 9,610,074 | | 1994 | 9,644,772 | | 1993 | 9,600,960 | | 1992 | 9,480,414 | | 1991 | 9,314,269 | | 1990 | 9,139,127 | | 1989 | 8,971,523 | | 1988 | 8,825,077 | | 1987 | 8,717,574 | | 1986 | 8,645,046 | | 1985 | 8,587,100 | | 1984 | 8,532,246 | | 1983 | 8,458,817 | | 1982 | 8,337,579 | | 1981 | 8,162,357 | | 1980 | 7,973,204 | | 1979 | 7,809,874 | | 1978 | 7,666,873 | | 1977 | 7,592,067 | | 1976 | 7,649,534 | | 1975 | 7,828,264 | | 1974 | 8,024,678 | | 1973 | 8,196,560 | | 1972 | 8,328,811 | | 1971 | 8,402,924 | | 1970 | 8,447,916 | | 1969 | 8,578,372 | | 1968 | 8,834,379 | | 1967 | 9,147,917 | | 1966 | 9,458,278 | | 1965 | 9,719,216 | | 1964 | 9,892,122 | | 1963 | 9,984,933 | | 1962 | 10,035,091 | | 1961 | 10,029,071 | | 1960 | 9,951,249 |
|