Year	Index
1980	0.72
1981	0.985
1982	1.874
1983	2.483
1984	2.782
1985	3.203
1986	3.58
1987	4.182
1988	5.053
1989	5.887
1990	7.009
1991	9.018
1992	10.985
1993	12.059
1994	13.693
1995	16.867
1996	19.821
1997	22.444
1998	25.063
1999	27.581
2000	30.603
2001	34.048
2002	37.169
2003	40.679
2004	45.69
2005	51.993
2006	57.959
2007	63.383
2008	71.891
2009	77.527
2010	81.918
2011	85.915
2012	89.777
2013	94.474
2014	98.743
2015	99.534
2016	99.518
2017	101.136
2018	103.475
2019	106.176
2020	109.471
2021	112.755
2022	116.138
2023	119.622
2024	123.211