Year	Index (Units)
1980	43.467
1981	47.580
1982	47.843
1983	48.477
1984	49.220
1985	49.708
1986	51.949
1987	54.581
1988	55.458
1989	57.554
1990	61.014
1991	64.864
1992	66.910
1993	67.398
1994	71.345
1995	74.659
1996	72.953
1997	74.366
1998	77.047
1999	78.587
2000	84.003
2001	86.501
2002	85.916
2003	86.355
2004	89.376
2005	94.006
2006	94.640
2007	101.070
2008	104.510
2009	101.280
2010	105.560
2011	110.610
2012	116.150
2013	115.283
2014	119.513
2015	116.401
2016	113.103
2017	115.341
2018	117.844
2019	117.016
2020	116.587
2021	121.423
2022	129.801
2023	132.664
2024	135.092
2025	137.794
2026	140.550
2027	143.361
2028	146.228
2029	149.153