Year	base year varies by country
1990	39.37951052132
1991	40.4203391938317
1992	43.3888359572312
1993	44.4937043514639
1994	42.418111601098
1995	44.6028202603957
1996	50.2639277162438
1997	49.6078063426534
1998	50.9673810617982
1999	54.0873251657565
2000	61.9047619047619
2001	64.2857142857143
2002	67.3913043478261
2003	68.1818181818182
2004	72.0930232558139
2005	73.1707317073171
2006	76.1904761904762
2007	75.5555555555556
2008	79.1666666666667
2009	80
2010	79.5454545454545
2011	80.8510638297872
2012	82.6086956521739
2013	83.3333333333333
2014	89.5833333333333
2015	92.4528301886792
2016	100
2017	102.969962228369
2018	110.482232193512
2019	117.595900125214
2020	118.643474089806
2021	124.201642901426
2022	131.091799190234
2023	138.962680207613