Year	Index
1980	3.457
1981	3.878
1982	4.105
1983	4.44
1984	5.075
1985	5.269
1986	5.357
1987	5.737
1988	5.995
1989	6.694
1990	7.162
1991	7.808
1992	8.224
1993	9.023
1994	10.35
1995	12.354
1996	15.618
1997	20.469
1998	23.022
1999	23.832
2000	29.915
2001	32.269
2002	31.863
2003	35.232
2004	38.113
2005	43.164
2006	44.349
2007	48.079
2008	59.814
2009	66.128
2010	70.424
2011	77.173
2012	91.2
2013	98.439
2014	102.787
2015	108.495
2016	114.492
2017	133.546
2018	135.2
2019	145.089
2020	158.11
2021	172.299
2022	187.761
2023	204.612
2024	222.974