Year	base year varies by country
1990	0.0019294804017591293
1991	0.003461219725873502
1992	0.02314889003782761
1993	0.34518850335505735
1994	14.523104751887203
1995	37.929109324153615
1996	45.36009330175502
1997	53.40515695249232
1998	59.118706470802294
1999	59.15051474747812
2000	58.33797832353208
2001	60.687814286690354
2002	62.118468225404946
2003	64.97499575697854
2004	69.05451201203599
2005	71.2703032696396
2006	74.56157478925527
2007	77.75122615849533
2008	82.40818433545746
2009	84.46612525605315
2010	91.02805820474778
2011	94.92547002923035
2012	100
2013	103.36682464224465
2014	105.75375319523897
2015	107.03750847987943
2016	107.32498455016446
2017	109.63316063544406
2018	112.68941468525968
2019	113.8902586001663
2020	115.94779169986951
2021	123.94878490211947
2022	133.84696545948725
2023	137.6376763673342