Year	Index
1980	32.533
1981	32.791
1982	34.122
1983	32.052
1984	35.342
1985	35.749
1986	35.897
1987	35.416
1988	36.636
1989	36.562
1990	36.969
1991	37.745
1992	39.98
1993	40.158
1994	55.633
1995	63.676
1996	66.807
1997	69.348
1998	73.339
1999	73.595
2000	76.693
2001	79.746
2002	81.678
2003	82.909
2004	83.641
2005	88.128
2006	91.465
2007	92.649
2008	100.004
2009	100.402
2010	102.59
2011	105.397
2012	112.504
2013	113.593
2014	112.363
2015	112.667
2016	111.756
2017	111.917
2018	113.081
2019	115.397
2020	117.712
2021	120.082
2022	122.507
2023	124.99
2024	127.533