Year	base year varies by country
1990	8.535997183916248
1991	13.252647343773699
1992	18.371544263211376
1993	24.00109916676121
1994	32.93767678514953
1995	42.13968892883661
1996	49.704750122277524
1997	56.497672336809515
1998	62.72470386461202
1999	66.59137420910835
2000	70.66900567347628
2001	72.87371476471581
2002	74.22203905134135
2003	74.79802858237696
2004	78.47556939700813
2005	80.48391264286377
2006	81.87501674737305
2007	84.91838236398313
2008	88.22539158792817
2009	91.56520932479897
2010	92.99669473140965
2011	95.89453114391453
2012	98.02746307267667
2013	98.2427952314343
2014	98.70007759951108
2015	100
2016	100.08727638801051
2017	101.8509205803897
2018	103.1033212121212
2019	106.22996721411924
2020	110.75009368650103
2021	116.57661185994337
2022	128.95522212790513
2023	142.78984231358822