Year	Index (Units)
1980	0.034
1981	0.041
1982	0.087
1983	0.102
1984	0.127
1985	0.149
1986	0.179
1987	0.229
1988	0.387
1989	1.215
1990	8.020
1991	12.450
1992	17.330
1993	22.533
1994	30.771
1995	41.260
1996	48.650
1997	55.424
1998	61.558
1999	65.243
2000	69.974
2001	72.409
2002	74.222
2003	74.798
2004	78.476
2005	80.484
2006	81.875
2007	84.919
2008	88.226
2009	91.565
2010	92.997
2011	95.895
2012	98.028
2013	98.243
2014	98.700
2015	100.000
2016	100.087
2017	101.851
2018	103.103
2019	106.230
2020	110.750
2021	116.577
2022	129.110
2023	142.719
2024	148.914
2025	155.633
2026	160.670
2027	164.716
2028	168.852
2029	173.077