Year	Index
1980	29.348
1981	33.075
1982	34.828
1983	36.117
1984	36.4
1985	37.292
1986	37.967
1987	38.917
1988	40.408
1989	42.592
1990	45.092
1991	47.675
1992	49.625
1993	51.258
1994	53.883
1995	56.992
1996	60.308
1997	63.708
1998	68.792
1999	68.967
2000	70.108
2001	71.217
2002	71.733
2003	73.033
2004	75.05
2005	78.442
2006	82.1
2007	83.908
2008	88.492
2009	87.742
2010	90.625
2011	94.078
2012	96.913
2013	99.03
2014	100.908
2015	99.999
2016	100.188
2017	100.854
2018	101.928
2019	102.93
2020	104.239
2021	105.907
2022	107.813
2023	109.97
2024	112.169