Year	Index
1980	30.275
1981	32.73
1982	34.857
1983	38.901
1984	46.798
1985	49.184
1986	41.315
1987	39.373
1988	45.24
1989	43.067
1990	44.537
1991	45.472
1992	42.38
1993	55.688
1994	64.203
1995	70.623
1996	78.038
1997	78.522
1998	81.27
1999	83.952
2000	94.905
2001	95.571
2002	107.571
2003	94.81
2004	103.55
2005	100
2006	99.113
2007	100.756
2008	110.519
2009	115.745
2010	113.226
2011	125.369
2012	127.957
2013	129.118
2014	133.873
2015	139.412
2016	132.597
2017	139.733
2018	144.68
2019	142.977
2020	150.132
2021	154.794
2022	163.497
2023	166.521
2024	154.341