Year	base year varies by country
1990	6.50804051949678
1991	10.9266334304796
1992	18.0268898048127
1993	26.8706810072825
1994	33.1179748174336
1995	47.9316576104844
1996	66.7370268279609
1997	89.5198430679463
1998	98.7764988303965
1999	86.5061955538893
2000	66.6683185053855
2001	69.1764056292191
2002	71.5106826567716
2003	71.1028476632549
2004	67.2058455426718
2005	69.2989128921982
2006	66.3582924452588
2007	70.3333305357672
2008	79.30978549903
2009	76.2760214055688
2010	80.2538277728004
2011	87.0376212262923
2012	87.0139285772173
2013	86.2027192621475
2014	87.3212489984502
2015	100
2016	102.840727736993
2017	113.532174147434
2018	110.65803762699
2019	106.837931428776
2020	105.769543225499
2021	108.625314104106
2022	116.554999225603
2023	124.72624534636