Year	base year varies by country
1991	3.347485603106827
1992	4.934112510333844
1993	7.140212024414522
1994	10.270490431423008
1995	16.18050185804264
1996	23.448623293265307
1997	25.55469629014328
1998	26.798033078757815
1999	28.863181151746765
2000	32.956790515907294
2001	39.81131039700932
2002	42.6196825626316
2003	43.67999218167079
2004	46.94716529018237
2005	49.268527823048096
2006	52.77844206221995
2007	56.05179964557401
2008	57.27758709296643
2009	58.70789444559048
2010	65.37141372553982
2011	67.42461286851051
2012	67.06042892074345
2013	69.07745056408754
2014	70.89706970176576
2015	74.71456756105385
2016	85.06179359469803
2017	88.07279836184006
2018	91.24474778389971
2019	99.99698318208664
2020	103.05108849020792
2021	105.17194723584396
2022	102.2045768759249