Year	maximum value in 2004 = 100
2006	11.3005861812
2007	26.8469968445
2008	39.0799171656
2009	45.3905371255
2010	50.2978959198
2011	44.9489728503
2012	50.9618131151
2013	56.473471084
2014	57.8327386808
2015	58.2901760135
2016	61.1905494817
2017	66.3883495341
2018	62.5369528895
2019	62.0447837254
2020	68.0522500059
2021	69.3039477287