Year	base year varies by country
1990	13.8603161220738
1991	16.0300823478933
1992	18.3887527171501
1993	20.775900289094
1994	22.8144704940301
1995	25.2871756883174
1996	27.3157351728326
1997	29.5385347987388
1998	31.9239895883521
1999	34.1231802695868
2000	37.2564359990556
2001	40.1626149612901
2002	45.1981867189742
2003	48.0889558871907
2004	50.994573117953
2005	53.8487443629607
2006	57.1144752454419
2007	61.8240005215831
2008	66.6773896503651
2009	72.4536798079928
2010	76.8939546192367
2011	81.1531541580179
2012	84.9553469208063
2013	89.9202320356869
2014	94.7458428172569
2015	100.000000176439
2016	106.95217214959
2017	112.806008890395
2018	117.310685699107
2019	122.722843148459
2020	129.177534410462
2021	137.574239980202
2022	144.122064141977
2023	150.643246778265