Year	base year varies by country
1990	0.00727819376844417
1991	0.0174550597170254
1992	0.182410701668357
1993	1.75197675658138
1994	6.59516105551952
1995	9.14996291328565
1996	11.69840851093
1997	13.1610534866048
1998	14.4063168552626
1999	20.1373897114857
2000	25.6406870021871
2001	28.7404540051773
2002	31.5648939752019
2003	36.2573224211201
2004	39.1532262549366
2005	42.8117601265728
2006	48.5563025678412
2007	56.2809863393653
2008	61.4837407581737
2009	62.8175639298054
2010	69.7720657683252
2011	75.4869551535071
2012	81.0912743002226
2013	84.273175257644
2014	89.6263626381548
2015	100.000000136295
2016	103.550873972022
2017	110.025357668709
2018	113.55830725706
2019	119.635620817469
2020	126.305317924946
2021	134.365780460824
2022	160.235497783103
2023	174.189430630234