Year	Index
1980	11.173
1981	10.367
1982	11.066
1983	11.667
1984	13.637
1985	14.316
1986	13.816
1987	13.351
1988	13.536
1989	15.683
1990	16.362
1991	16.92
1992	17.826
1993	19.205
1994	20.48
1995	23.778
1996	27.213
1997	35.311
1998	39.352
1999	47.46
2000	59.95
2001	68.435
2002	70.553
2003	76.134
2004	87.029
2005	100
2006	102.846
2007	111.354
2008	138.32
2009	152.275
2010	165.867
2011	179.741
2012	205.43
2013	230.285
2014	250.201
2015	271.14
2016	301.193
2017	340.631
2018	358.14
2019	389.735
2020	423.744
2021	460.881
2022	509.064
2023	567.808
2024	633.644