Year	Index
1997	8.146
1998	11.616
1999	14.665
2000	15.29
2001	17.772
2002	25.612
2003	37.77
2004	40.794
2005	43.603
2006	50.819
2007	68.32
2008	82.606
2009	85.656
2010	90.731
2011	96.927
2012	97.276
2013	102.882
2014	108.174
2015	116.026
2016	126.583
2017	132.435
2018	140.306
2019	150.861
2020	160.961
2021	170.863
2022	181.365
2023	192.363
2024	204.027