Year	base year varies by country
1990	36.3086459746683
1991	41.5430660781511
1992	49.2800171874392
1993	54.7555577492787
1994	52.8019547734989
1995	53.7355376806006
1996	55.9140907873736
1997	59.337313139906
1998	61.6714487197126
1999	65.8208149553573
2000	69.4848754238933
2001	73.2294045336607
2002	77.539074322867
2003	81.8916781904423
2004	86.5016296014327
2005	87.3148562033265
2006	93.0512391980799
2007	89.6932647540846
2008	73.9711694954662
2009	96.8670076726344
2010	87.1803069053709
2011	92.8929765886288
2012	110.914388166741
2013	100
2014	101.33779264214
2015	92.5440172475747
2016	116.752933057281
2017	134.902358142962
2018	158.574879227053
2019	151.27524820267
2020	158.291203235592
2021	185.603690960275
2022	163.900796080833
2023	175.805716023108