Year	Index
1980	43.4
1981	53.662
1982	53.461
1983	56.965
1984	57.266
1985	54.413
1986	52.11
1987	52.21
1988	49.807
1989	50.608
1990	49.307
1991	45.903
1992	44.701
1993	46.253
1994	65.025
1995	69.995
1996	72.539
1997	75.522
1998	78.057
1999	76.592
2000	80.135
2001	82.682
2002	83.161
2003	81.798
2004	84.984
2005	88.518
2006	88.838
2007	92.995
2008	105.68
2009	102.37
2010	103.822
2011	105.319
2012	106.021
2013	107.231
2014	106.559
2015	108.9
2016	106.5
2017	111.586
2018	113.391
2019	115.931
2020	118.25
2021	120.615
2022	123.027
2023	125.488
2024	127.998