Year	base year varies by country
1994	31.88595430649151
1995	35.66156229524407
1996	39.8691841430719
1997	43.826958964772544
1998	49.11500932291739
1999	55.02209953733941
2000	60.84715518193568
2001	65.89715121470822
2002	68.24139357293257
2003	72.98384810782717
2004	80.83747768549581
2005	89.4457171500936
2006	99.99865121862396
2007	109.41899413201703
2008	125.69597496222234
2009	128.97870619426988
2010	137.374476537182
2011	151.81328586620867
2012	162.3425905257599
2013	171.4879193646403
2014	182.5010016381221
2015	188.24792205647603
2016	193.92250868997763
2017	202.59825721929272
2018	213.87707935058637
2019	223.78392973589828
2020	228.1991466283846
2021	251.0517162389969
2022	281.9742116486218
2023	294.4898841155004