Year base year varies by country 1970 37.95438360980159 1971 42.453890166093316 1972 45.41075999967947 1973 46.891662826106554 1974 52.4577162203451 1975 54.69505675982447 1976 54.99598682567704 1977 52.713007285584936 1978 57.641784181864075 1979 59.33746575131668 1980 62.27763431611341 1981 60.98269401438237 1982 59.70403303249249 1983 60.618476943191915 1984 62.15221990713095 1985 59.27024886323058 1986 59.81163116943461 1987 59.254600692036504 1988 59.35313240417736 1989 59.7300418709529 1990 61.21465090091879 1991 56.61092249743719 1992 62.70505088838904 1993 72.73308244174646 1994 90.9824576114048 1995 103.29312069689762 1996 100.82986372162486 1997 100 1998 102.99551783506557 1999 107.36081366605895 2000 111.80455114108541 2001 112.30161470859119 2002 116.53609576335826 2003 117.84799362901704 2004 118.10827694976523 2005 121.02473296119898 2006 131.73449016319165 2007 137.1188710961266 2008 147.47424704144777 2009 145.44780758379957 2010 139.44412803280554 2011 149.6804574503868 2012 151.47941915056228 2013 156.05429292929293 2014 158.77178457589935 2015 164.10310994136205 2016 166.09438051113437 2017 173.04034290549865 2018 176.17148912477325 2019 182.33059805783495 2020 209.0315752337273 2021 1155.5399611635553 2022 1316.1697006742945