Year	Index
1980	19.182
1981	32.496
1982	34.87
1983	37.422
1984	43.903
1985	41.315
1986	37.002
1987	35.116
1988	37.841
1989	37.538
1990	37.412
1991	34.79
1992	33.231
1993	31.726
1994	47.77
1995	53.044
1996	59.179
1997	61.418
1998	65.563
1999	60.598
2000	63.804
2001	72.607
2002	73.992
2003	74.035
2004	81.256
2005	100
2006	109.924
2007	113.691
2008	123.445
2009	111.741
2010	118.665
2011	128.645
2012	130.381
2013	124.948
2014	125.902
2015	115.866
2016	114.458
2017	113.48
2018	116.128
2019	119.275
2020	122.739
2021	126.387
2022	130.001
2023	132.23
2024	136.044