Year	base year varies by country
1990	25.5009087794494
1991	24.979885255428
1992	26.1460100627872
1993	26.9377930028588
1994	27.6532698342434
1995	27.0800368018563
1996	25.4334982184586
1997	25.6559537369898
1998	28.3271961320221
1999	28.9097830897211
2000	29.2717177173461
2001	31.0739075891797
2002	32.1966580094527
2003	34.1113400689583
2004	42.5280130349455
2005	42.7230656873438
2006	43.3392794531796
2007	48.1410097113107
2008	63.5106606093674
2009	81.4092118525371
2010	79.6835722846319
2011	80.5317093919307
2012	88.9370325118207
2013	93.9532870510615
2014	100
2015	98.9968135812864
2016	96.7252639116457
2017	98.9813714914881
2018	102.393637441864
2019	102.523626408918
2020	107.886051471381
2021	110.852982551611
2022	112.54059831651
2023	111.491146553549