Year	Index
1980	30.52
1981	34.332
1982	37.947
1983	40.303
1984	45.319
1985	48.822
1986	53.086
1987	54.518
1988	55.81
1989	57.561
1990	61.03
1991	66.517
1992	70.335
1993	73.98
1994	77.784
1995	82.547
1996	85.013
1997	85.898
1998	88.256
1999	88.865
2000	90.573
2001	91.129
2002	93.662
2003	94.75
2004	96.165
2005	97.11
2006	100.3
2007	102.343
2008	106.325
2009	107.358
2010	108.425
2011	109.408
2012	110.817
2013	112.901
2014	113.401
2015	115.153
2016	117.05
2017	117.932
2018	120.189
2019	121.872
2020	124.309
2021	126.796
2022	129.332
2023	131.918
2024	134.557