Year	maximum value in 2004 = 100
2006	34.0967086534
2007	34.6495246476
2008	35.0033428144
2009	37.3148996639
2010	38.8948986087
2011	47.4079256819
2012	51.1111480062
2013	50.9983775126
2014	55.2830182123
2015	51.2718060489
2016	55.838043973
2017	56.7294698488
2018	55.6065271981
2019	57.6743494189
2020	60.8071133037
2021	61.4981173947