Year	Index
1980	4.6
1981	5.066
1982	5.775
1983	6.729
1984	7.501
1985	8.763
1986	10.266
1987	11.752
1988	13.532
1989	15.863
1990	18.319
1991	21.186
1992	24.272
1993	27.413
1994	30.034
1995	33.102
1996	35.719
1997	38.571
1998	41.575
1999	44.497
2000	48.411
2001	52.11
2002	58.471
2003	61.858
2004	65.896
2005	69.487
2006	73.833
2007	80.367
2008	87.464
2009	94.028
2010	100
2011	106.532
2012	112.16
2013	119.064
2014	125.668
2015	132.166
2016	141.69
2017	149.154
2018	154.996
2019	162.677
2020	171.463
2021	180.894
2022	190.843
2023	201.339
2024	212.413