Year	Index
1980	34.813
1981	37.444
1982	41.959
1983	45.46
1984	47.664
1985	51.026
1986	49.648
1987	48.233
1988	50.255
1989	50.093
1990	49.689
1991	50.932
1992	49.918
1993	50.224
1994	62.64
1995	67.508
1996	71.632
1997	73.73
1998	77.351
1999	76.516
2000	76.386
2001	79.997
2002	81.837
2003	83.507
2004	83.173
2005	88.504
2006	90.571
2007	90.36
2008	100
2009	100.864
2010	100.25
2011	103.027
2012	106.959
2013	107.52
2014	107.243
2015	108.223
2016	108.013
2017	108.392
2018	110.559
2019	112.771
2020	115.026
2021	117.327
2022	119.673
2023	122.067
2024	124.508