Year base year varies by country 1995 2.5821430538469436 1996 4.777808480031292 1997 5.7743987079949735 1998 7.184157589592487 1999 9.188242899601228 2000 16.630044899539858 2001 31.06928260690359 2002 37.13065880981223 2003 41.767291018611 2004 45.16020208344066 2005 51.7842987564023 2006 58.182633322348785 2007 63.24561538055909 2008 68.99160909922809 2009 74.43345534805509 2010 78.69770455879885 2011 85.70895997551732 2012 91.02234892000877 2013 95.68764778217209 2014 98.1615399005552 2015 100 2016 101.54988883247718 2017 104.5667259938705 2018 106.63185877137269 2019 109.23431635161882 2020 111.90882697617988 2021 118.36868157787879 2022 130.61993087492723 2023 146.2978961698429