Year	base year varies by country
1990	34.4352240234006
1991	33.6561361535534
1992	33.5563258073646
1993	32.9978536634499
1994	33.3591430727209
1995	35.3000822629613
1996	38.068643763202
1997	39.3857302817557
1998	33.8977956899185
1999	38.8090409522962
2000	43.0578233497543
2001	42.3488371665145
2002	44.8714639572125
2003	45.9109645694083
2004	50.9870472869402
2005	61.2607630698597
2006	68.3500961217186
2007	74.1156836967813
2008	87.2266389580262
2009	73.5205129704696
2010	86.1596275405502
2011	99.438638751446
2012	103.42835116549
2013	102.505151889248
2014	100.410557157873
2015	83.9061271845071
2016	81.9255644803343
2017	87.1584094481062
2018	99.999993101687
2019	97.977252902887
2020	88.9784653120787
2021	100.813224184035
2022	118.943419540491
2023	115.416881943782