Year	Index
1980	13.362
1981	15.54
1982	17.28
1983	19.094
1984	20.737
1985	22.416
1986	24.658
1987	27.074
1988	29.349
1989	32.753
1990	36.487
1991	41.084
1992	47.863
1993	54.755
1994	60.56
1995	66.918
1996	73.677
1997	80.234
1998	85.457
1999	92.137
2000	100
2001	106.565
2002	115.119
2003	125.692
2004	134.475
2005	146.054
2006	162.928
2007	174.459
2008	196.481
2009	212.412
2010	227.174
2011	246.422
2012	264.996
2013	280.583
2014	292.97
2015	301.918
2016	310.401
2017	320.632
2018	331.023
2019	342.992
2020	356.026
2021	369.911
2022	384.522
2023	399.711
2024	415.5