Year	Index
1980	3.792
1981	4.485
1982	4.727
1983	5.74
1984	6.284
1985	6.377
1986	6.956
1987	7.663
1988	8.815
1989	10.146
1990	12.137
1991	13.231
1992	15.059
1993	16.613
1994	17.312
1995	19.305
1996	22.549
1997	24.971
1998	25.901
1999	26.933
2000	29.852
2001	33.081
2002	36.815
2003	41.3
2004	46.7
2005	50.2
2006	56.9
2007	67.6
2008	77
2009	80.9
2010	86.4
2011	90.6
2012	99
2013	103.6
2014	105
2015	109.8
2016	114.7
2017	122.9
2018	126.3
2019	131.984
2020	138.187
2021	144.682
2022	151.771
2023	159.359
2024	167.327