Year	Index
1991	48.3
1992	50.169
1993	52.882
1994	55.916
1995	58.547
1996	60.087
1997	61.546
1998	62.788
1999	62.426
2000	63.904
2001	64.814
2002	65.712
2003	66.89
2004	68.946
2005	71.347
2006	73.876
2007	79.91
2008	87.301
2009	89.192
2010	91.687
2011	98.674
2012	99.722
2013	100.782
2014	104.24
2015	102.562
2016	105.03
2017	104.145
2018	104.745
2019	105.792
2020	107.167
2021	108.775
2022	110.407
2023	112.063
2024	113.744