Year base year varies by country 1990 56.6154636847441 1991 61.7903684238751 1992 67.9072538001324 1993 73.7560436130408 1994 78.4182906529515 1995 81.66448701257 1996 86.4692800859022 1997 91.4500991038032 1998 92.5657228988132 1999 88.7745218849431 2000 85.7613227303563 2001 84.23995796744 2002 81.3742167359765 2003 76.4854998368853 2004 73.738997513942 2005 73.6283629723829 2006 73.2345603956373 2007 75.5322585515978 2008 76.5001422487852 2009 76.2129108298218 2010 76.4191910544307 2011 79.3979085312846 2012 82.2124061667608 2013 83.7024641340301 2014 86.0882463520186 2015 89.2248795995394 2016 90.6866425524818 2017 93.2989620200145 2018 96.7133025989601 2019 98.6910442645857 2020 99.3209942073119 2021 100 2022 101.690190811646 2023 104.913856264487