Year	base year varies by country
1990	5.72501790526595
1991	6.56145783835802
1992	7.93333833298085
1993	9.38804621720388
1994	14.711809308653
1995	17.0603109492641
1996	18.7623482323948
1997	21.1502306972832
1998	24.1445571864923
1999	25.8422581929807
2000	28.6994299433131
2001	32.5016250931548
2002	35.8236063992471
2003	42.2666688022239
2004	50.425372052082
2005	55.5042821389181
2006	63.0075262550182
2007	65.59855723657
2008	73.9131344636382
2009	82.4881425429905
2010	88.5871701838607
2011	92.4147831654365
2012	99.9999979999737
2013	108.077146680343
2014	110.475363476906
2015	116.226670353091
2016	134.477993739192
2017	153.008896403196
2018	163.009188930186
2019	195.28564065202
2020	231.775126089776
2021	275.720237925865
2022	358.991311689138
2023	472.116521526886