Year	maximum value in 2004 = 100
2006	10.1418504944
2007	9.2608076418
2008	9.6594441498
2009	25.2912178179
2010	24.8861057829
2011	37.5310392946
2012	37.6722641884
2013	44.6265287002
2014	44.3544116163
2015	43.5964464529
2016	46.3565154149
2017	50.1130812781
2018	51.2220487048
2019	56.6512042385
2020	52.1569315426
2021	51.8445805502