Year	Index
1980	45.337
1981	48.372
1982	51.239
1983	53.398
1984	55.692
1985	58.26
1986	61.383
1987	65.172
1988	66.266
1989	73.019
1990	68.902
1991	70.67
1992	73.434
1993	72.801
1994	74.387
1995	74.999
1996	75.738
1997	76.809
1998	79.151
1999	83.07
2000	83.836
2001	84.132
2002	87.465
2003	88.474
2004	89.531
2005	94.059
2006	94.837
2007	97.633
2008	99.086
2009	98.059
2010	97.674
2011	96.836
2012	100
2013	99.542
2014	102.782
2015	109.471
2016	111.791
2017	113.217
2018	116.506
2019	118.196
2020	120.267
2021	122.991
2022	125.888
2023	128.737
2024	131.495