Year	Index
1980	30.471
1981	35.179
1982	40.852
1983	43.893
1984	46.583
1985	53.748
1986	60.854
1987	70.445
1988	74.919
1989	79.183
1990	83.984
1991	86.206
1992	87.066
1993	88.212
1994	89.717
1995	93.085
1996	95.235
1997	96.345
1998	97.564
1999	97.456
2000	100
2001	102.651
2002	105.374
2003	107.202
2004	109.674
2005	113.006
2006	116.804
2007	119.599
2008	124.292
2009	126.98
2010	129.846
2011	135.149
2012	136.546
2013	138.087
2014	139.771
2015	140.201
2016	141.096
2017	143.712
2018	146.079
2019	148.935
2020	151.823
2021	154.883
2022	158.004
2023	161.188
2024	164.436