Year	Index (Units)
1980	6.797
1981	7.235
1982	8.147
1983	8.687
1984	9.153
1985	9.311
1986	9.209
1987	9.590
1988	9.870
1989	9.972
1990	10.391
1991	12.428
1992	13.608
1993	15.305
1994	18.519
1995	28.883
1996	32.693
1997	36.536
1998	38.897
1999	37.956
2000	39.440
2001	40.765
2002	41.572
2003	44.667
2004	50.019
2005	54.581
2006	59.401
2007	64.795
2008	74.800
2009	82.536
2010	84.450
2011	89.233
2012	94.842
2013	98.842
2014	100.592
2015	103.142
2016	109.042
2017	114.301
2018	115.850
2019	118.650
2020	127.825
2021	128.883
2022	146.775
2023	167.366
2024	177.073
2025	185.927
2026	195.223
2027	204.984
2028	215.234
2029	225.995