Year	Index
1980	28.732
1981	34.548
1982	40.487
1983	44.696
1984	48.556
1985	51.211
1986	52.769
1987	54.433
1988	55.612
1989	57.83
1990	59.772
1991	61.644
1992	63.586
1993	64.487
1994	66.013
1995	67.675
1996	69.15
1997	70.017
1998	71.508
1999	73.233
2000	77.117
2001	80.2
2002	83.958
2003	87.317
2004	89.333
2005	91.3
2006	93.742
2007	96.442
2008	99.458
2009	97.792
2010	96.192
2011	97.358
2012	99.192
2013	99.742
2014	100.033
2015	99.992
2016	99.792
2017	100.058
2018	100.775
2019	101.984
2020	103.514
2021	105.274
2022	107.274
2023	109.419
2024	111.608