Year	base year varies by country
1990	13.7258018283971
1991	14.8590508615441
1992	15.917015282886
1993	16.7355195386153
1994	17.3676864765355
1995	18.0560113976754
1996	18.581750486012
1997	19.2961800781606
1998	19.7819740583103
1999	20.6406604507428
2000	21.0982603040894
2001	24.2895785272408
2002	28.2011425214989
2003	35.925756968005
2004	69.7642684609711
2005	72.634234622266
2006	73.5808068715274
2007	76.8292706563346
2008	78.7314449793226
2009	82.2848355000658
2010	86.9292638640972
2011	90.9037771688135
2012	94.3991730412781
2013	100
2014	105.211723106828
2015	115.438683908243
2016	124.466707882667
2017	129.347941941404
2018	138.339905653105
2019	146.989202087314
2020	150.206441416124
2021	161.294865492126
2022	175.234415397036
2023	197.878952552941