Year	Index
1980	31.897
1981	35.758
1982	38.829
1983	42.275
1984	45.675
1985	49.043
1986	51.12
1987	53.261
1988	56.364
1989	59.995
1990	61.914
1991	67.356
1992	68.284
1993	71.486
1994	73.564
1995	75.379
1996	76.147
1997	77.532
1998	78.313
1999	78.759
2000	79.779
2001	81.918
2002	83.504
2003	85.44
2004	86.312
2005	87.033
2006	88.338
2007	89.822
2008	92.829
2009	94.627
2010	96.427
2011	97.738
2012	98.654
2013	99.091
2014	99.298
2015	99.998
2016	101.136
2017	103.024
2018	105.12
2019	107.066
2020	108.87
2021	110.938
2022	113.157
2023	115.42
2024	117.729