Year	Index (Units)
1980	4.725
1981	5.212
1982	5.767
1983	6.398
1984	7.075
1985	7.713
1986	8.455
1987	8.883
1988	9.366
1989	10.306
1990	11.431
1991	12.813
1992	14.920
1993	18.706
1994	21.109
1995	23.543
1996	28.423
1997	31.656
1998	33.178
1999	34.088
2000	36.027
2001	36.698
2002	37.261
2003	39.231
2004	41.649
2005	43.419
2006	44.143
2007	47.725
2008	54.727
2009	61.096
2010	62.098
2011	68.348
2012	74.856
2013	80.349
2014	86.484
2015	94.474
2016	100.000
2017	107.605
2018	112.117
2019	116.910
2020	122.684
2021	128.009
2022	135.701
2023	145.636
2024	155.605
2025	164.301
2026	173.171
2027	181.572
2028	190.661
2029	200.246