Year	Index
1996	39.7
1997	42.5
1998	47.1
1999	52.3
2000	54.6
2001	56.5
2002	59.6
2003	63.704
2004	68.471
2005	72.702
2006	79.084
2007	87.763
2008	92.632
2009	95.398
2010	106.122
2011	108.288
2012	106.801
2013	109.334
2014	111.468
2015	116.907
2016	119.049
2017	127.045
2018	128.969
2019	132.86
2020	136.901
2021	141.065
2022	145.327
2023	149.661
2024	154.173