Year	maximum value in 2004 = 100
2006	20.9302541322
2007	22.0404183503
2008	23.1841216562
2009	33.6598645886
2010	43.3204531899
2011	48.5436340789
2012	42.3013614123
2013	42.5745303429
2014	44.0579415987
2015	57.532561233
2016	59.0761976148
2017	59.4176421947
2018	66.7544342974
2019	61.3911660153
2020	79.7780778121
2021	77.4735324778