Year	Index
1980	9.447
1981	11.445
1982	14.047
1983	17.573
1984	22.722
1985	27.116
1986	30.279
1987	33.126
1988	36.299
1989	40.877
1990	46.343
1991	51.639
1992	56.215
1993	59.549
1994	62.509
1995	64.99
1996	66.898
1997	68.163
1998	69.673
1999	71.184
2000	73.181
2001	76.408
2002	79.236
2003	81.801
2004	83.854
2005	85.64
2006	88.248
2007	90.386
2008	92.783
2009	91.945
2010	93.224
2011	96.538
2012	99.218
2013	99.654
2014	99.495
2015	100
2016	100.636
2017	102.202
2018	103.395
2019	104.429
2020	106.204
2021	108.01
2022	109.911
2023	111.999
2024	114.239