Year | Value | 2022 | 161,377 | 2021 | 159,517 | 2020 | 158,022 | 2019 | 156,383 | 2018 | 154,270 | 2017 | 152,298 | 2016 | 150,919 | 2015 | 151,229 | 2014 | 153,674 | 2013 | 157,488 | 2012 | 161,510 | 2011 | 164,816 | 2010 | 166,708 | 2009 | 167,310 | 2008 | 167,270 | 2007 | 166,651 | 2006 | 166,391 | 2005 | 167,032 | 2004 | 168,151 | 2003 | 169,147 | 2002 | 170,606 | 2001 | 172,242 | 2000 | 173,828 | 1999 | 175,700 | 1998 | 177,157 | 1997 | 177,681 | 1996 | 176,811 | 1995 | 173,979 | 1994 | 169,950 | 1993 | 165,485 | 1992 | 160,149 | 1991 | 154,696 | 1990 | 149,669 | 1989 | 144,664 | 1988 | 140,202 | 1987 | 137,115 | 1986 | 135,371 | 1985 | 135,380 | 1984 | 137,914 | 1983 | 142,549 | 1982 | 147,828 | 1981 | 153,503 | 1980 | 160,395 | 1979 | 166,957 | 1978 | 172,265 | 1977 | 177,910 | 1976 | 183,477 | 1975 | 186,028 | 1974 | 186,367 | 1973 | 187,012 | 1972 | 188,852 | 1971 | 193,470 | 1970 | 199,853 | 1969 | 205,684 | 1968 | 210,388 | 1967 | 211,358 | 1966 | 207,270 | 1965 | 201,613 | 1964 | 196,526 | 1963 | 191,900 | 1962 | 188,907 | 1961 | 187,827 | 1960 | 187,843 |
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