Year	base year varies by country
1990	13.0231159146825
1991	16.3855113102672
1992	20.6818273795456
1993	20.8211726966118
1994	21.1184993841582
1995	22.3753327265051
1996	22.7212482633919
1997	23.0470997436688
1998	23.81333294312
1999	24.820083339659
2000	26.3837793566264
2001	26.8461356498963
2002	26.9623183091895
2003	31.2522109602503
2004	36.4155710344331
2005	46.3901037879291
2006	63.8253797969347
2007	72.5176790913911
2008	84.6318475953523
2009	86.1307023652018
2010	100
2011	108.99929083813
2012	121.551617215783
2013	126.814014068884
2014	130.131337656413
2015	133.999217552315
2016	141.595564119224
2017	156.259912060693
2018	167.290431176601
2019	183.020595940787
2020	191.611469294527
2021	213.646788262362
2022	237.13116155766
2023	254.662749770843