Year	Index (Units)
1980	0.136
1981	0.158
1982	0.174
1983	0.193
1984	0.218
1985	0.237
1986	0.269
1987	0.309
1988	0.399
1989	0.484
1990	0.514
1991	0.619
1992	0.701
1993	0.899
1994	1.152
1995	2.062
1996	3.066
1997	3.607
1998	4.433
1999	6.163
2000	8.109
2001	10.060
2002	12.370
2003	13.650
2004	15.677
2005	17.361
2006	20.827
2007	21.681
2008	24.275
2009	26.193
2010	29.369
2011	33.503
2012	39.418
2013	50.180
2014	60.659
2015	73.341
2016	88.408
2017	100.000
2018	106.129
2019	114.331
2020	121.505
2021	131.501
2022	154.137
2023	198.257
2024	248.205
2025	282.195
2026	303.802
2027	323.171
2028	341.743
2029	361.436