Year	base year varies by country
1990	0.04495981079701657
1991	0.13007962379005647
1992	0.3824480216240199
1993	1.2002681398956043
1994	2.708273502570536
1995	3.9082534627169685
1996	5.723582221132919
1997	13.201929135766566
1998	18.900545833013567
1999	28.26228708292896
2000	39.72498496230084
2001	54.50421248910563
2002	66.26705813560856
2003	80.71152943233527
2004	91.5023412728054
2005	100
2006	107.4341774274694
2007	117.60224683566527
2008	135.39408263826635
2009	140.21619308974263
2010	148.2286415007819
2011	153.4781142006177
2012	160.12041966779327
2013	161.73621559783777
2014	163.4449128570125
2015	166.8374981043888
2016	171.16359771297834
2017	179.02171469546755
2018	189.23833725693774
2019	200.7558264111787
2020	206.01233797612016
2021	217.6690071906454
2022	248.2779437528555
2023	273.972910813283