Year	Index
1980	38.141
1981	38.93
1982	39.006
1983	37.721
1984	35.8
1985	36.047
1986	35.385
1987	36.897
1988	38.513
1989	38.412
1990	40.065
1991	39.809
1992	40.463
1993	41.429
1994	41.485
1995	43.116
1996	45.66
1997	45.149
1998	43.162
1999	46.97
2000	52.426
2001	51.472
2002	53.389
2003	55.557
2004	60.274
2005	70.227
2006	78.633
2007	88.448
2008	104.817
2009	88.889
2010	100
2011	113.165
2012	115.698
2013	114.694
2014	113.531
2015	95.996
2016	92.927
2017	98.79
2018	107.826
2019	105.64
2020	107.323
2021	108.891
2022	110.647
2023	112.648
2024	114.982