Year	base year varies by country
1990	14.990789495086
1991	15.8882729415657
1992	17.4306955910267
1993	19.2368549701503
1994	22.2516158375609
1995	23.7383592949238
1996	27.340935510303
1997	29.2857429591262
1998	31.7075435319661
1999	33.8589815745468
2000	37.6786561691695
2001	41.9000840189474
2002	46.0916015311345
2003	46.6774755065256
2004	47.6298140090011
2005	50.2961698557812
2006	55.0273222338904
2007	60.1373983570135
2008	66.7293066021005
2009	71.3639267248931
2010	74.0228741994998
2011	76.8467553301315
2012	85.4999370321301
2013	88.953955702303
2014	96.2792177050214
2015	99.999999657578
2016	107.968671642551
2017	118.678125466192
2018	123.933768020309
2019	125.081789609862
2020	130.874991276751
2021	132.883045962298
2022	141.451149363491
2023	150.523294807766