Year	Index
1980	48.547
1981	54.721
1982	56.828
1983	62.796
1984	69.523
1985	75.835
1986	74.783
1987	63.613
1988	69.305
1989	69.196
1990	70.308
1991	71.368
1992	67.153
1993	66.772
1994	82.99
1995	92.653
1996	98.63
1997	97.966
1998	101.954
1999	100.767
2000	100
2001	105.174
2002	110.461
2003	109.015
2004	105.626
2005	112.4
2006	114.108
2007	115.769
2008	126.329
2009	129.129
2010	130.794
2011	134.785
2012	141.956
2013	138.573
2014	142.356
2015	144.409
2016	141.809
2017	144.31
2018	146.812
2019	149.237
2020	152.579
2021	155.997
2022	159.49
2023	163.063
2024	166.715