Year | Value | 2023 | 152,257 | 2022 | 149,592 | 2021 | 147,010 | 2020 | 145,074 | 2019 | 144,243 | 2018 | 143,943 | 2017 | 144,656 | 2016 | 146,296 | 2015 | 148,605 | 2014 | 151,865 | 2013 | 155,465 | 2012 | 158,910 | 2011 | 161,690 | 2010 | 163,446 | 2009 | 163,624 | 2008 | 162,830 | 2007 | 160,825 | 2006 | 158,006 | 2005 | 156,170 | 2004 | 155,947 | 2003 | 157,180 | 2002 | 159,404 | 2001 | 161,491 | 2000 | 162,189 | 1999 | 161,819 | 1998 | 160,605 | 1997 | 159,522 | 1996 | 159,684 | 1995 | 160,241 | 1994 | 159,771 | 1993 | 156,987 | 1992 | 152,862 | 1991 | 149,545 | 1990 | 147,766 | 1989 | 147,960 | 1988 | 152,083 | 1987 | 159,281 | 1986 | 166,110 | 1985 | 171,956 | 1984 | 177,419 | 1983 | 181,804 | 1982 | 184,173 | 1981 | 185,502 | 1980 | 186,864 | 1979 | 188,220 | 1978 | 188,642 | 1977 | 189,379 | 1976 | 192,024 | 1975 | 195,271 | 1974 | 198,473 |
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