Year	maximum value in 2004 = 100
2006	87.2640192515
2007	93.5445823339
2008	89.4291293346
2009	89.2104544938
2010	95.5087629683
2011	95.2763287575
2012	93.7827305376
2013	95.6299544982
2014	91.6002076553
2015	90.6888031639
2016	89.6268957162
2017	92.2792651407
2018	90.8054734459
2019	89.4865856436
2020	93.5912873945
2021	90.5590960659