Year	base year varies by country
1998	52.05720840454564
1999	52.72203070316134
2000	58.222261065147976
2001	58.315240476300424
2002	58.17937878062973
2003	60.92490097346091
2004	62.57972686546025
2005	76.69872635296973
2006	70.0607885535836
2007	71.16002719249495
2008	85.2002363234056
2009	75.1102347280205
2010	79.1044564838907
2011	96.46475722619414
2012	97.05925582552263
2013	97.60709839198975
2014	102.5024448549386
2015	100.06266987282102
2016	97.59023554950315
2017	95.8343079305876
2018	99.99977401129944
2019	99.5025212857118
2020	94.85925875420078
2021	103.02711511739176