Year	Index
1980	38.886
1981	39.299
1982	40.292
1983	42.155
1984	44.734
1985	43.949
1986	40.153
1987	42.374
1988	43.908
1989	45.862
1990	47.614
1991	50.064
1992	51.271
1993	53.315
1994	55.415
1995	57.428
1996	59.542
1997	61.613
1998	66.849
1999	66.883
2000	72.932
2001	71.778
2002	74.024
2003	76.466
2004	81.062
2005	85.156
2006	88.546
2007	92.869
2008	102.516
2009	96.373
2010	100
2011	105.412
2012	106.466
2013	106.652
2014	109.284
2015	108.883
2016	111.009
2017	115.247
2018	116.266
2019	118.699
2020	121.322
2021	124.227
2022	127.321
2023	130.45
2024	133.864