Year base year varies by country 1990 22.727800967699785 1991 32.231335737403896 1992 53.28648204289195 1993 61.80361766472965 1994 64.74488230427606 1995 71.06389495805028 1996 71.37027895854835 1997 77.7359899374733 1998 78.33019978506478 1999 78.06816425274312 2000 76.68992469557088 2001 76.1766534329615 2002 77.00686167643363 2003 79.28521596147432 2004 79.2108665972705 2005 81.03814450410131 2006 82.41738303250014 2007 87.01788442437716 2008 95.83958364691189 2009 97.48185515044794 2010 100 2011 109.11160328890051 2012 113.59634189219211 2013 115.6666024760462 2014 114.01204180161795 2015 110.20356823227955 2016 107.19133328349501 2017 110.39366996535682 2018 116.20175201367493 2019 118.79300383117246 2020 226.88893624662668 2021 617.4187414029991 2022 1547.0785084392521 2023 3930.244533573462