Year	Index
1980	48.819
1981	54.416
1982	56.685
1983	58.015
1984	60.245
1985	60.845
1986	61.149
1987	63.352
1988	67.66
1989	70.611
1990	75.265
1991	78.666
1992	81.026
1993	83.538
1994	88.955
1995	91.39
1996	94.1
1997	94.441
1998	97.521
1999	98.628
2000	98.469
2001	100.374
2002	102.791
2003	104.84
2004	106.968
2005	109.213
2006	111.166
2007	112.74
2008	118.753
2009	118.1
2010	122.08
2011	126.3
2012	130.565
2013	131.948
2014	133.386
2015	134.678
2016	134.02
2017	137.279
2018	139.081
2019	141.821
2020	144.669
2021	147.575
2022	150.538
2023	153.562
2024	156.645