Year	base year varies by country
1990	0.281665341285523
1991	0.542641175213355
1992	1.44089656753379
1993	3.51086468145347
1994	6.34561401674524
1995	8.28807784017216
1996	10.3061634259713
1997	12.9241908424904
1998	15.1092673504459
1999	17.8174332515955
2000	23.6283878607846
2001	29.6137558602608
2002	35.3561365355832
2003	41.5815473621037
2004	49.78010754164
2005	58.0685945460204
2006	66.5130762902781
2007	75.1399624505151
2008	83.1350384107039
2009	87.7570852198721
2010	100
2011	111.10741330686
2012	118.876296108297
2013	130.444019180098
2014	137.540858081461
2015	146.700105596621
2016	166.616260346189
2017	183.399244810868
2018	196.992009958915
2019	212.029336888599
2020	241.530824503626
2021	302.258382569342
2022	320.700964060995
2023	349.195509477946