Year	base year varies by country
1990	0.000776091359316633
1991	0.001754919913851094
1992	0.027101167053654663
1993	0.3086785274546155
1994	1.301979286357983
1995	3.248994728629303
1996	4.660593020503816
1997	5.543921888320023
1998	6.757274494354852
1999	11.52700303706618
2000	14.331174189079979
2001	17.614417363601163
2002	20.749041277386986
2003	23.473704421551663
2004	27.124914870739865
2005	31.015502043508004
2006	34.751580371330505
2007	38.800755432591245
2008	45.092267132851696
2009	51.27907344054407
2010	55.2748442339442
2011	65.24560660597078
2012	71.0242898714144
2013	76.08068090404348
2014	82.4255216419679
2015	93.53142559808205
2016	100
2017	102.8911506277883
2018	108.19291668065334
2019	113.61661488108024
2020	119.50632848537673
2021	138.90906639287965
2022	148.88850357198103
2023	161.16227890303387