Year	base year varies by country
1990	3.11919982457819
1991	4.22696015337938
1992	14.0751288471725
1993	31.7606428461331
1994	43.1444433842575
1995	47.3893825757205
1996	54.3087066224654
1997	60.4128121686322
1998	64.4791139204194
1999	65.8350129603178
2000	69.5530265332017
2001	72.2035931737441
2002	74.83720210148
2003	78.7277153097625
2004	81.2095033428414
2005	83.8949539363895
2006	85.9740293615007
2007	89.7454601747404
2008	93.4403574357268
2009	95.7000592931679
2010	100
2011	102.314743796998
2012	103.381594575105
2013	103.680104757091
2014	105.287060398773
2015	105.880870312261
2016	105.211011366062
2017	106.737340734897
2018	108.309532117697
2019	109.671009828334
2020	110.434914958701
2021	114.249813988865
2022	125.521715981993
2023	131.236823656868