Year	Index (Units)
1980	4.003
1981	4.450
1982	5.371
1983	6.628
1984	8.193
1985	10.391
1986	12.194
1987	14.771
1988	16.588
1989	20.104
1990	25.580
1991	30.382
1992	34.311
1993	38.590
1994	42.128
1995	45.640
1996	48.695
1997	51.637
1998	54.045
1999	55.297
2000	57.816
2001	59.357
2002	61.058
2003	61.729
2004	63.238
2005	65.559
2006	67.268
2007	72.556
2008	77.700
2009	76.528
2010	78.780
2011	82.237
2012	83.436
2013	85.986
2014	90.025
2015	94.010
2016	96.576
2017	98.758
2018	100.847
2019	103.822
2020	106.862
2021	114.488
2022	129.111
2023	134.184
2024	138.210
2025	142.356
2026	146.627
2027	151.025
2028	155.556
2029	160.223