Year base year varies by country 1990 44.2576065319664 1991 45.6399032422186 1992 46.8157607336514 1993 47.6988889393548 1994 49.2148858145644 1995 50.5801965334862 1996 52.5586676151661 1997 53.2588805857273 1998 56.6462213255755 1999 57.4804942771462 2000 59.374517896227 2001 62.6430322776334 2002 64.2402906851041 2003 67.0780881066366 2004 66.2113197758947 2005 70.5747268801081 2006 74.4513005347071 2007 77.2674090477514 2008 82.3375865859519 2009 86.4401026052351 2010 88.5960039866391 2011 90.6955754334167 2012 91.765083188882 2013 92.8497604165674 2014 93.9644727271727 2015 95.8226619615302 2016 97.9514414356902 2017 100 2018 102.046115685438 2019 104.508337690896 2020 106.99802253029 2021 109.993581866344 2022 113.329774123212 2023 116.996512996382