Year	Index
1980	15.724
1981	16.402
1982	18.145
1983	20.608
1984	21.456
1985	22.75
1986	24.322
1987	26.831
1988	30.4
1989	33.935
1990	37.013
1991	41.06
1992	43.163
1993	48.008
1994	52.074
1995	55.204
1996	55.802
1997	58.173
1998	63.119
1999	68.177
2000	70.508
2001	74.999
2002	79.654
2003	84.087
2004	89.869
2005	93.717
2006	100
2007	108.308
2008	114.467
2009	113.718
2010	114.999
2011	118.635
2012	121.56
2013	124.904
2014	126.753
2015	127.971
2016	130.719
2017	132.498
2018	135.436
2019	138.957
2020	143.126
2021	147.42
2022	151.695
2023	155.487
2024	159.219