Year	base year varies by country
1990	28.7366469497662
1991	32.0849124898864
1992	36.8140644967302
1993	40.3249868236515
1994	43.0482245681384
1995	46.5715470759023
1996	47.6271398225667
1997	48.4178431208757
1998	47.4780720950999
1999	46.9124291759308
2000	46.0933923393867
2001	45.4116231738369
2002	44.8042368072633
2003	44.8268851525812
2004	45.6937658209221
2005	48.2379040045162
2006	51.9739025625799
2007	56.5278593717815
2008	62.2219844444119
2009	62.7957388826957
2010	65.8041165971252
2011	70.7332664558192
2012	75.628668235872
2013	81.4768128704156
2014	88.5901647292698
2015	92.5891701136943
2016	93.3869968719309
2017	95.3938009988044
2018	98.7735529054961
2019	101.147678249632
2020	100.886432942021
2021	100
2022	101.256254329921
2023	107.868151609731