Year	Index
1980	5.396
1981	5.791
1982	6.371
1983	7.134
1984	7.78
1985	8.121
1986	8.864
1987	9.684
1988	10.226
1989	10.851
1990	11.928
1991	13.113
1992	13.774
1993	15.176
1994	16.639
1995	18.133
1996	19.301
1997	21.283
1998	37.786
1999	38.544
2000	42.146
2001	47.435
2002	52.11
2003	54.8
2004	58.307
2005	68.286
2006	72.792
2007	77.193
2008	85.732
2009	88.31
2010	94.46
2011	98.03
2012	101.61
2013	109.82
2014	119
2015	122.99
2016	126.71
2017	131.28
2018	135.39
2019	140.275
2020	145.185
2021	149.72
2022	154.212
2023	158.825
2024	163.574