Year	Index (Units)
1980	5.536
1981	6.280
1982	6.932
1983	7.916
1984	8.408
1985	8.755
1986	10.143
1987	11.491
1988	12.758
1989	13.788
1990	15.019
1991	16.212
1992	19.626
1993	21.367
1994	23.280
1995	25.067
1996	26.867
1997	29.043
1998	31.461
1999	35.041
2000	36.230
2001	37.112
2002	38.187
2003	39.998
2004	41.583
2005	43.471
2006	46.932
2007	49.843
2008	53.171
2009	59.883
2010	65.612
2011	71.888
2012	77.859
2013	85.546
2014	93.278
2015	100.006
2016	109.938
2017	114.835
2018	119.597
2019	125.145
2020	132.841
2021	137.622
2022	146.238
2023	157.667
2024	167.619
2025	177.028
2026	186.676
2027	196.756
2028	207.381
2029	218.580