Year	maximum value in 2004 = 100
2006	79.7430886401
2007	76.2482120313
2008	75.4273431808
2009	74.8860409869
2010	79.088463573
2011	76.8960878468
2012	86.2018362474
2013	88.8347867502
2014	85.5823390349
2015	87.1968295944
2016	82.0461664838
2017	85.6698777328
2018	92.0496648498
2019	95.6156319109
2020	103.852253372
2021	102.6129324202
