Year	maximum value in 2004 = 100
2006	69.1184431583
2007	72.6842639641
2008	71.9001710119
2009	73.1873120662
2010	85.4194919545
2011	89.7127316751
2012	90.4608300704
2013	94.3610839325
2014	93.0412812348
2015	95.5424143311
2016	96.9975096315
2017	101.0652427361
2018	103.0228698375
2019	108.5679373102
2020	108.54693534
2021	111.2528687777