Year | Value | 2022 | 167,584 | 2021 | 170,144 | 2020 | 171,877 | 2019 | 172,405 | 2018 | 172,160 | 2017 | 170,690 | 2016 | 168,121 | 2015 | 166,245 | 2014 | 165,549 | 2013 | 165,815 | 2012 | 166,984 | 2011 | 168,130 | 2010 | 167,989 | 2009 | 166,662 | 2008 | 164,419 | 2007 | 162,453 | 2006 | 161,774 | 2005 | 161,668 | 2004 | 160,858 | 2003 | 157,999 | 2002 | 153,905 | 2001 | 150,667 | 2000 | 149,118 | 1999 | 149,509 | 1998 | 153,608 | 1997 | 160,558 | 1996 | 167,065 | 1995 | 172,654 | 1994 | 177,872 | 1993 | 181,840 | 1992 | 183,638 | 1991 | 184,190 | 1990 | 184,514 | 1989 | 184,692 | 1988 | 183,941 | 1987 | 183,739 | 1986 | 185,342 | 1985 | 187,473 | 1984 | 189,780 | 1983 | 192,426 | 1982 | 195,041 | 1981 | 196,424 | 1980 | 197,895 | 1979 | 201,063 | 1978 | 205,851 | 1977 | 211,632 | 1976 | 217,138 | 1975 | 218,769 | 1974 | 211,804 | 1973 | 198,365 | 1972 | 180,589 | 1971 | 166,147 | 1970 | 156,112 | 1969 | 151,494 | 1968 | 152,319 | 1967 | 153,234 | 1966 | 149,722 | 1965 | 146,233 | 1964 | 146,150 | 1963 | 142,603 | 1962 | 140,048 | 1961 | 140,512 | 1960 | 143,183 |
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