Year	base year varies by country
1990	0.4966841069822434
1991	1.3042166691295387
1992	13.465967045028563
1993	20.69633036552471
1994	28.199119596145295
1995	36.467866068484
1996	41.00237754338031
1997	43.41632452205694
1998	45.51065199507745
1999	46.189601877206066
2000	47.860846641736394
2001	48.962842995372654
2002	51.44660519780317
2003	54.02825108710781
2004	57.843888599178605
2005	64.32183194163679
2006	72.31932130756856
2007	86.8285088231734
2008	96.9546643556839
2009	87.59497538835792
2010	87.2790667769076
2011	92.97266509073494
2012	96.35129134594915
2013	98.00701071424803
2014	99.88442126499906
2015	100
2016	100.86339249455708
2017	103.83672145353687
2018	107.87863901220234
2019	112.46984439268857
2020	114.79889417446014
2021	119.13052862391045
2022	133.18944275655906
2023	140.39322373502804