Year	base year varies by country
1990	24.74184980888027
1991	33.696516182918614
1992	37.860483163464146
1993	45.81451744631767
1994	51.46892990771982
1995	56.009066396265375
1996	61.55681703079061
1997	66.67311627906976
1998	73.21239131224435
1999	75.4393631034776
2000	76.82905705524712
2001	80.58544858499616
2002	82.78087776618722
2003	83.85100490760196
2004	87.24617009677752
2005	87.32900533579635
2006	87.90022900636035
2007	91.012232722385
2008	92.84119747476058
2009	95.24376118343201
2010	93.88623852865857
2011	93.86692429109188
2012	95.22885927391614
2013	96.52845202820353
2014	99.01747321872875
2015	100
2016	101.14145060120347
2017	102.46331304146294
2018	105.09413439668718
2019	109.18119635787313
2020	113.89608024132886
2021	117.68632492447517
2022	127.74538794701762
2023	138.67440233134863