Year	Index
1980	10.424
1981	12.044
1982	13.599
1983	14.259
1984	15.257
1985	16.335
1986	16.793
1987	16.995
1988	18.403
1989	21.047
1990	23.244
1991	25.235
1992	26.845
1993	30.868
1994	32.717
1995	34.685
1996	37.269
1997	39.157
1998	42.699
1999	44.787
2000	46.917
2001	49.255
2002	51.784
2003	53.81
2004	56.824
2005	59.047
2006	66.064
2007	71.757
2008	76.621
2009	77.749
2010	82.551
2011	86.521
2012	89.272
2013	92.899
2014	93.121
2015	94.314
2016	96.507
2017	100.629
2018	102.4
2019	106.597
2020	110.414
2021	114.235
2022	118.12
2023	122.101
2024	126.199