Year	Index
1980	35.377
1981	38.502
1982	43.293
1983	48.823
1984	55.442
1985	61.62
1986	61.719
1987	60.246
1988	60.764
1989	59.627
1990	60.644
1991	62.779
1992	61.944
1993	63.163
1994	72.244
1995	79.093
1996	81.29
1997	84.157
1998	87.359
1999	89.345
2000	94.004
2001	95.377
2002	97.134
2003	97.324
2004	99.257
2005	100
2006	103.359
2007	104.349
2008	111.249
2009	113.079
2010	115.239
2011	118.316
2012	121.476
2013	123.956
2014	126.555
2015	126.78
2016	128.168
2017	130.068
2018	131.521
2019	132.641
2020	134.324
2021	136.34
2022	138.566
2023	140.901
2024	143.221