Year	Index
1980	47.426
1981	51.078
1982	53.881
1983	57.281
1984	60.398
1985	63.11
1986	67.28
1987	60.41
1988	61.096
1989	64.523
1990	67.072
1991	71.148
1992	74.149
1993	78.679
1994	81.826
1995	85.181
1996	83.761
1997	85.9
1998	89.051
1999	90.614
2000	90.956
2001	96.415
2002	99.476
2003	101.1
2004	100.352
2005	100
2006	99.003
2007	102.559
2008	116.574
2009	128.018
2010	123.026
2011	124.868
2012	121.065
2013	119.263
2014	121.772
2015	122.469
2016	124.817
2017	125.261
2018	127.596
2019	130.284
2020	133.508
2021	136.781
2022	140.214
2023	143.78
2024	147.488