Year	Index
1997	26.468
1998	26.713
1999	26.401
2000	26.153
2001	25.875
2002	32.568
2003	36.946
2004	38.577
2005	42.297
2006	46.907
2007	51.049
2008	55.431
2009	58.907
2010	65.069
2011	71.43
2012	78.603
2013	86.95
2016	168.27
2017	211.473
2018	283.959
2019	408.024
2020	502.727
2021	595.384
2022	671.326
2023	726.647
2024	768.605