| Year | Value | | 2022 | 9,228,071 | | 2021 | 9,302,585 | | 2020 | 9,379,952 | | 2019 | 9,419,758 | | 2018 | 9,438,785 | | 2017 | 9,458,989 | | 2016 | 9,469,379 | | 2015 | 9,461,076 | | 2014 | 9,448,515 | | 2013 | 9,443,211 | | 2012 | 9,446,836 | | 2011 | 9,461,643 | | 2010 | 9,483,836 | | 2009 | 9,504,583 | | 2008 | 9,527,985 | | 2007 | 9,560,953 | | 2006 | 9,604,924 | | 2005 | 9,663,915 | | 2004 | 9,730,146 | | 2003 | 9,796,749 | | 2002 | 9,865,548 | | 2001 | 9,928,549 | | 2000 | 9,979,610 | | 1999 | 10,026,738 | | 1998 | 10,071,963 | | 1997 | 10,117,433 | | 1996 | 10,159,569 | | 1995 | 10,193,831 | | 1994 | 10,226,955 | | 1993 | 10,239,050 | | 1992 | 10,216,470 | | 1991 | 10,194,050 | | 1990 | 10,189,348 | | 1989 | 10,170,000 | | 1988 | 10,140,000 | | 1987 | 10,111,000 | | 1986 | 10,043,000 | | 1985 | 9,975,000 | | 1984 | 9,910,000 | | 1983 | 9,843,000 | | 1982 | 9,776,000 | | 1981 | 9,710,000 | | 1980 | 9,643,000 | | 1979 | 9,584,000 | | 1978 | 9,525,000 | | 1977 | 9,463,000 | | 1976 | 9,411,000 | | 1975 | 9,367,000 | | 1974 | 9,317,584 | | 1973 | 9,257,272 | | 1972 | 9,188,968 | | 1971 | 9,115,576 | | 1970 | 9,040,000 | | 1969 | 8,960,304 | | 1968 | 8,874,552 | | 1967 | 8,785,648 | | 1966 | 8,696,496 | | 1965 | 8,610,000 | | 1964 | 8,524,224 | | 1963 | 8,437,232 | | 1962 | 8,351,928 | | 1961 | 8,271,216 | | 1960 | 8,198,000 |
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