Year	base year varies by country
1990	0.1952207513886106
1991	0.3835510063111224
1992	5.5994663395035476
1993	27.30120513372427
1994	65.09393832845903
1995	71.34082207675422
1996	77.41570583155017
1997	86.30037457157943
1998	91.23554656479469
1999	93.03335766296323
2000	90.89835876763604
2001	93.66334229240711
2002	95.25600123896545
2003	96.83526569446693
2004	96.49720374674922
2005	100.00027894391832
2006	104.1338969982186
2007	108.13243970730795
2008	117.34412933501513
2009	116.51283047043133
2010	118.40097224256627
2011	125.87408920543149
2012	124.83665600095134
2013	128.8058812532878
2014	128.7092611862643
2015	128.29491504001138
2016	128.50242363709208
2017	132.08324182888762
2018	135.67546945250163
2019	136.70748823322248
2020	138.64896362580237
2021	146.13696308275033
2022	161.45681093780397
2023	163.79685037748092