Year	maximum value in 2004 = 100
2006	48.4759793784
2007	50.7514177572
2008	58.3127645188
2009	62.3635843518
2010	61.0506946881
2011	61.2757581724
2012	65.2144604598
2013	63.7287040707
2014	64.034032589
2015	69.0497396167
2016	70.0950961659
2017	71.8084905504
2018	71.6990324675
2019	72.1336403449
2020	76.4964988805
2021	73.942853845