Year	Index
1980	43.371
1981	47.003
1982	49.379
1983	51.181
1984	51.92
1985	53.05
1986	53.928
1987	56.475
1988	59.817
1989	63.475
1990	67.096
1991	70.646
1992	73.493
1993	75.177
1994	78.69
1995	83.207
1996	86.617
1997	90.446
1998	97.739
1999	95.22
2000	96.487
2001	98.338
2002	100
2003	102.149
2004	105.795
2005	111.182
2006	116.857
2007	119.747
2008	125.895
2009	126.14
2010	131.288
2011	136.202
2012	138.802
2013	141.271
2014	143.308
2015	144.343
2016	147.897
2017	150.942
2018	153.066
2019	155.654
2020	157.604
2021	159.777
2022	162.414
2023	165.544
2024	167.811