Year	Index (Units)
1980	41.899
1981	45.503
1982	53.101
1983	58.624
1984	62.083
1985	66.615
1986	70.878
1987	70.169
1988	63.293
1989	67.662
1990	78.061
1991	70.387
1992	63.670
1993	64.010
1994	87.128
1995	95.533
1996	96.192
1997	100.014
1998	101.463
1999	99.499
2000	100.000
2001	102.136
2002	102.304
2003	104.457
2004	104.884
2005	106.112
2006	104.620
2007	103.552
2008	109.002
2009	111.057
2010	112.664
2011	114.086
2012	117.147
2013	117.710
2014	123.021
2015	122.845
2016	125.408
2017	128.734
2018	134.884
2019	137.611
2020	139.954
2021	141.462
2022	147.475
2023	152.834
2024	156.028
2025	159.404
2026	162.965
2027	166.730
2028	170.660
2029	174.792