Year	Index
1980	53.539
1981	58.358
1982	64.833
1983	69.542
1984	70.154
1985	71.641
1986	67.095
1987	67.925
1988	70.241
1989	73.634
1990	74.967
1991	71.993
1992	72.156
1993	71.116
1994	81.526
1995	87.045
1996	87.349
1997	88.708
1998	95.752
1999	100
2000	99.2
2001	103.1
2002	106.3
2003	107.8
2004	107.9
2005	112
2006	111.2
2007	114.003
2008	124.445
2009	127.439
2010	132.256
2011	141.125
2012	149.344
2013	146.214
2014	145.266
2015	140.797
2016	139.248
2017	145.514
2018	150.607
2019	153.62
2020	156.692
2021	159.826
2022	163.022
2023	166.283
2024	169.608