Year	Index
1980	20.685
1981	21.538
1982	24.28
1983	28.016
1984	34.93
1985	43.822
1986	66.741
1987	76.964
1988	86.521
1989	93.783
1990	103.619
1991	115.59
1992	120.498
1993	126.677
1994	133.065
1995	138.44
1996	141.559
1997	141.996
1998	148.782
1999	151.385
2000	151.693
2001	163.932
2002	185.252
2003	217.789
2004	235.407
2005	246.814
2006	247.859
2007	262.78
2008	280.741
2009	288.371
2010	305.063
2011	318.432
2012	334.059
2013	352.684
2014	377.193
2015	402.34
2016	434.025
2017	464.169
2018	494.096
2019	526.1
2020	555.061
2021	582.877
2022	612.086
2023	642.759
2024	674.969