Year	Index (Units)
1980	0.485
1981	0.577
1982	0.694
1983	0.784
1984	0.894
1985	1.090
1986	1.348
1987	1.721
1988	2.534
1989	3.054
1990	3.740
1991	4.792
1992	6.007
1993	7.477
1994	9.808
1995	12.442
1996	14.845
1997	17.921
1998	23.061
1999	25.282
2000	27.196
2001	28.639
2002	30.672
2003	33.264
2004	35.600
2005	37.888
2006	44.129
2007	46.748
2008	54.199
2009	59.219
2010	64.695
2011	72.164
2012	79.916
2013	87.641
2014	92.944
2015	100.000
2016	107.472
2017	110.343
2018	107.661
2019	109.259
2020	112.943
2021	115.721
2022	120.846
2023	127.994
2024	134.132
2025	139.879
2026	146.005
2027	153.091
2028	160.798
2029	168.838