Year	Index
1980	6.083
1981	6.793
1982	7.705
1983	8.842
1984	9.708
1985	12.812
1986	16.699
1987	19.972
1988	23.616
1989	29.162
1990	34.8
1991	38.22
1992	45.84
1993	51.38
1994	55.95
1995	62.32
1996	66.9
1997	68.19
1998	71.07
1999	70.34
2000	73.36
2001	74.4
2002	76.48
2003	78.41
2004	82.62
2005	86.14
2006	90.34
2007	94.73
2008	99.92
2009	100
2010	102.13
2011	107.29
2012	108.13
2013	108.98
2014	109.5
2015	110.61
2016	109.58
2017	111.81
2018	112.3
2019	113.872
2020	115.239
2021	116.391
2022	117.788
2023	118.73
2024	120.155