Year	maximum value in 2004 = 100
2006	79.4567531445
2007	82.347862591
2008	82.6514208167
2009	79.0059296737
2010	78.2609640364
2011	79.7782707275
2012	78.8292260979
2013	83.2739235729
2014	81.0408218424
2015	85.1239726416
2016	82.9015582716
2017	84.0411527099
2018	82.5809926954
2019	85.5307710286
2020	83.3399373636
2021	85.07903368