| Year | Value | | 2022 | 144,236,933 | | 2021 | 144,130,482 | | 2020 | 144,073,139 | | 2019 | 144,406,261 | | 2018 | 144,477,859 | | 2017 | 144,496,739 | | 2016 | 144,342,397 | | 2015 | 144,096,870 | | 2014 | 143,819,667 | | 2013 | 143,506,995 | | 2012 | 143,201,721 | | 2011 | 142,960,908 | | 2010 | 142,849,468 | | 2009 | 142,785,349 | | 2008 | 142,742,366 | | 2007 | 142,805,114 | | 2006 | 143,049,637 | | 2005 | 143,518,814 | | 2004 | 144,067,316 | | 2003 | 144,648,618 | | 2002 | 145,306,497 | | 2001 | 145,976,482 | | 2000 | 146,596,869 | | 1999 | 147,214,776 | | 1998 | 147,670,784 | | 1997 | 147,915,361 | | 1996 | 148,160,129 | | 1995 | 148,375,787 | | 1994 | 148,407,912 | | 1993 | 148,458,777 | | 1992 | 148,538,197 | | 1991 | 148,394,216 | | 1990 | 147,969,407 | | 1989 | 147,721,000 | | 1988 | 146,857,000 | | 1987 | 145,908,000 | | 1986 | 144,894,000 | | 1985 | 143,858,000 | | 1984 | 142,745,000 | | 1983 | 141,668,000 | | 1982 | 140,823,000 | | 1981 | 139,941,000 | | 1980 | 139,010,000 | | 1979 | 138,027,000 | | 1978 | 137,060,000 | | 1977 | 136,100,000 | | 1976 | 135,147,000 | | 1975 | 134,200,000 | | 1974 | 133,432,000 | | 1973 | 132,669,000 | | 1972 | 131,909,000 | | 1971 | 131,155,000 | | 1970 | 130,404,000 | | 1969 | 129,664,000 | | 1968 | 128,928,000 | | 1967 | 128,196,000 | | 1966 | 127,468,000 | | 1965 | 126,745,000 | | 1964 | 125,345,000 | | 1963 | 123,960,000 | | 1962 | 122,591,000 | | 1961 | 121,236,000 | | 1960 | 119,897,000 |
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