Year	Index (Units)
1980	0.053
1981	0.066
1982	0.106
1983	0.201
1984	0.320
1985	0.510
1986	0.870
1987	2.107
1988	4.226
1989	5.383
1990	6.896
1991	8.532
1992	9.796
1993	11.886
1994	12.879
1995	17.878
1996	22.651
1997	26.668
1998	30.859
1999	35.586
2000	39.393
2001	41.943
2002	44.251
2003	46.144
2004	49.890
2005	52.826
2006	56.052
2007	59.487
2008	63.241
2009	66.557
2010	69.468
2011	73.406
2012	76.740
2013	78.048
2014	81.457
2015	84.085
2016	89.195
2017	95.053
2018	100.000
2019	104.259
2020	109.284
2021	114.242
2022	121.601
2023	127.059
2024	134.147
2025	141.442
2026	146.831
2027	151.682
2028	156.733
2029	161.598