Year	base year varies by country
1990	16.7155263389805
1991	22.2274798506253
1992	24.1971423777763
1993	27.706780992238
1994	30.9546469413218
1995	33.6377394747134
1996	36.6314998048679
1997	39.6562871138728
1998	43.4246000936096
1999	45.613876486263
2000	48.729356554891
2001	52.4290765901573
2002	55.8208053399712
2003	58.3166845423039
2004	61.8295992843805
2005	65.3343703177791
2006	68.5888928476252
2007	73.4692330075408
2008	80.3808450946916
2009	83.2746964040619
2010	87.5529947127443
2011	93.5894614869796
2012	96.750680312369
2013	100
2014	102.860311606597
2015	105.155764394121
2016	108.002532095705
2017	109.890323591973
2018	111.287702326059
2019	115.255980154376
2020	118.567584362186
2021	121.761205165905
2022	129.339992104291
2023	135.707288995038