Year	Index
1980	41.502
1981	47.008
1982	49.083
1983	51.158
1984	52.248
1985	53.338
1986	54.946
1987	57.592
1988	58.889
1989	63.403
1990	65.428
1991	69.064
1992	72.694
1993	73.833
1994	73.825
1995	74.779
1996	76.051
1997	77.887
1998	78.632
1999	79.604
2000	80.279
2001	81.527
2002	81.666
2003	82.853
2004	84.837
2005	86.263
2006	88.5
2007	91.366
2008	97.176
2009	97.182
2010	99.913
2011	100.975
2012	102.345
2013	102.298
2014	103.123
2015	102.245
2016	102.253
2017	102.827
2018	104.224
2019	105.899
2020	107.754
2021	109.782
2022	111.978
2023	113.823
2024	116.1