Year	Index
1980	16.563
1981	18.973
1982	21.415
1983	23.456
1984	25.899
1985	28.609
1986	31.52
1987	34.934
1988	38.313
1989	41.659
1990	46.043
1991	49.857
1992	51.664
1993	53.203
1994	56.475
1995	62.189
1996	63.716
1997	66.875
1998	72.659
1999	77.148
2000	79.064
2001	80.573
2002	83.569
2003	88.049
2004	93.423
2005	100
2006	106.77
2007	116.495
2008	126.863
2009	133.097
2010	145.561
2011	162.249
2012	172.355
2013	185.349
2014	198.34
2015	210.559
2016	222.515
2017	235.001
2018	248.077
2019	261.419
2020	275.62
2021	290.718
2022	306.707
2023	323.576
2024	341.373