Year	base year varies by country
1990	38.4910690635986
1991	41.3472597024325
1992	42.7613041559397
1993	46.4359043514528
1994	50.9885399375871
1995	56.5610948396095
1996	60.2837869450384
1997	62.3236747759283
1998	64.9600255405084
1999	65.6057965116279
2000	67.7528325859492
2001	69.997911893771
2002	71.0553234584526
2003	73.1625908739366
2004	75.1509111317965
2005	78.3784648528737
2006	81.774362538907
2007	85.3686381565081
2008	88.3585031996688
2009	88.3285537849179
2010	90.6232594043347
2011	96.0183730148333
2012	98.3953558122678
2013	99.0165372011043
2014	100
2015	101.307617777231
2016	101.973964790965
2017	102.980005721718
2018	104.747413546988
2019	105.635687012894
2020	106.326029240361
2021	110.730132782148
2022	118.639855062969
2023	121.877352843482