Year	maximum value in 2004 = 100
2006	39.0319504897
2007	43.3477343764
2008	46.4804993561
2009	45.0627826373
2010	43.7687318545
2011	48.5826548538
2012	43.0775042637
2013	46.1884209014
2014	47.3162410299
2015	50.3519709842
2016	56.5217413481
2017	55.3798260922
2018	55.5425275349
2019	54.2830927592
2020	57.2185409309
2021	58.8891957075