Year	maximum value in 2004 = 100
2006	38.6437783224
2007	39.418994319
2008	39.6414812798
2009	37.1635223925
2010	38.6497433883
2011	39.4796516864
2012	40.2350589938
2013	47.7635830395
2014	46.9604546438
2015	52.4528228858
2016	61.7733368696
2017	63.6513107836
2018	63.6228100833
2019	62.1746427662
2020	71.9926071706
2021	70.6781062229