| Year | Value | | 2022 | 2,092,612 | | 2021 | 2,091,028 | | 2020 | 2,094,136 | | 2019 | 2,104,250 | | 2018 | 2,115,518 | | 2017 | 2,120,384 | | 2016 | 2,112,184 | | 2015 | 2,045,279 | | 2014 | 1,923,023 | | 2013 | 1,794,371 | | 2012 | 1,655,667 | | 2011 | 1,508,327 | | 2010 | 1,413,601 | | 2009 | 1,385,711 | | 2008 | 1,372,208 | | 2007 | 1,370,915 | | 2006 | 1,394,594 | | 2005 | 1,426,676 | | 2004 | 1,446,249 | | 2003 | 1,459,620 | | 2002 | 1,479,049 | | 2001 | 1,502,448 | | 2000 | 1,525,090 | | 1999 | 1,538,010 | | 1998 | 1,543,556 | | 1997 | 1,544,683 | | 1996 | 1,538,815 | | 1995 | 1,531,878 | | 1994 | 1,526,618 | | 1993 | 1,525,251 | | 1992 | 1,525,526 | | 1991 | 1,531,167 | | 1990 | 1,533,977 | | 1989 | 1,485,500 | | 1988 | 1,367,984 | | 1987 | 1,228,010 | | 1986 | 1,067,025 | | 1985 | 912,825 | | 1984 | 882,806 | | 1983 | 972,422 | | 1982 | 1,086,409 | | 1981 | 1,209,781 | | 1980 | 1,318,432 | | 1979 | 1,367,492 | | 1978 | 1,369,133 | | 1977 | 1,365,385 | | 1976 | 1,365,735 | | 1975 | 1,367,647 | | 1974 | 1,362,198 | | 1973 | 1,355,485 | | 1972 | 1,352,884 | | 1971 | 1,352,764 | | 1970 | 1,345,265 | | 1969 | 1,332,420 | | 1968 | 1,315,791 | | 1967 | 1,294,522 | | 1966 | 1,273,349 | | 1965 | 1,251,695 | | 1964 | 1,230,185 | | 1963 | 1,214,673 | | 1962 | 1,196,273 | | 1961 | 1,169,064 | | 1960 | 1,144,803 |
|