Year	Index
1989	3.391
1990	3.391
1991	6.919
1992	23.289
1993	30.495
1994	35.318
1995	37.443
1996	43.959
1997	62.453
1998	67.878
1999	67.179
2000	70.004
2001	72.474
2002	73.692
2003	76.123
2004	77.8
2005	79.385
2006	81.38
2007	83.843
2008	85.7
2009	88.7
2010	91.8
2011	93.4
2012	95.7
2013	97.4
2014	98.1
2015	100
2016	102.176
2017	104.014
2018	105.885
2019	108.215
2020	111.028
2021	114.359
2022	117.79
2023	121.323
2024	124.963