Year	base year varies by country
1990	21.4284668942643
1991	22.616599672687
1992	22.3761358255924
1993	23.9594939013686
1994	25.2399757350112
1995	26.8832719188043
1996	28.3525918171655
1997	25.5148307930356
1998	23.8138330862106
1999	24.0323849112954
2000	36.9647538534381
2001	37.2309095942698
2002	36.7123842119322
2003	42.407022602943
2004	49.5561164180905
2005	49.7989465922303
2006	54.348021416326
2007	60.8793748570576
2008	71.4275457143535
2009	69.4826856850105
2010	74.007400740074
2011	82.0915587215161
2012	88.4923665731303
2013	92.6650543310891
2014	93.422981572921
2015	93.4815703249238
2016	100
2017	97.3820658470061
2018	97.177687381259
2019	96.6330777388255
2020	95.2989608415764
2021	100.40152957988
2022	109.102534890314
2023	112.8125