Year	base year varies by country
2001	50.84265358822824
2002	52.431961409367325
2003	55.288266267256944
2004	60.16395786965393
2005	66.20710277719229
2006	70.04496197640665
2007	77.68500279754193
2008	86.1347434323906
2009	84.00400810905076
2010	100
2011	102.01944779786291
2012	104.00706763520617
2013	102.31488030653915
2014	100.5652321176475
2015	100.37651072989064
2016	99.72890682002992
2017	99.38502905938856
2018	108.74585906880891
2019	107.06931515020818
2020	98.91046399052986