Year 2010 = 100 1969 2.56902453351968 1970 2.73858015270629 1971 2.81051283964484 1972 2.91327382098563 1973 3.093105538332 1974 3.23846950986223 1975 3.50500580522346 1976 3.8355536285299 1977 4.29540902002563 1978 5.04813320836617 1979 5.62102567932608 1980 6.15602503844653 1981 7.05818082046753 1982 7.51996298035485 1983 7.96869149889254 1984 8.61546221276254 1985 9.51855969211015 1986 10.6961586953676 1987 11.4920877715448 1988 12.1714477074316 1989 13.3039231725121 1990 15.51936355384 1991 19.5367660532134 1992 25.7239938107487 1993 31.0077860314867 1994 40.0148210875034 1995 51.9310853466031 1996 61.6313321735073 1997 65.1649786270048 1998 68.3907504003648 1999 70.2000353167834 2000 70.4381279952933 2001 73.4148350773088 2002 74.4560790953083 2003 77.6345748311132 2004 80.7103016516726 2005 81.8260784457658 2006 83.7174875822751 2007 86.7974503902714 2008 91.0145831804057 2009 96.2361447551934 2010 100 2011 104.524211505053 2012 113.81793046074 2013 117.521838067973 2014 120.94986420025 2015 126.736646357875 2016 134.844870195013 2017 142.384203185789 2018 148.463994714821 2019 151.361667767746 2020 155.017250238567 2021 166.218894516626 2022 181.619931977783 2023 198.550857618244