Year	Index
1980	38.335
1981	42.272
1982	46.014
1983	48.675
1984	50.396
1985	52.078
1986	53.698
1987	56.27
1988	58.825
1989	61.591
1990	63.681
1991	65.624
1992	66.582
1993	67.439
1994	68.42
1995	69.961
1996	71.182
1997	71.999
1998	71.868
1999	73.237
2000	76.411
2001	77.679
2002	78.643
2003	81.203
2004	83.855
2005	86.475
2006	88.7
2007	91.608
2008	95.257
2009	93.055
2010	95.707
2011	98.803
2012	100
2013	101.736
2014	103.716
2015	102.776
2016	103.58
2017	106.202
2018	107.992
2019	109.893
2020	112.084
2021	114.444
2022	116.871
2023	119.372
2024	121.672