Year	Index (Units)
1980	3.832
1981	4.335
1982	4.899
1983	5.239
1984	5.811
1985	6.358
1986	6.682
1987	7.450
1988	8.703
1989	9.004
1990	12.074
1991	12.949
1992	14.653
1993	17.147
1994	21.937
1995	24.030
1996	26.933
1997	29.215
1998	32.474
1999	34.966
2000	36.910
2001	40.566
2002	45.142
2003	47.965
2004	50.567
2005	57.822
2006	62.936
2007	69.775
2008	75.277
2009	80.316
2010	85.174
2011	93.285
2012	100.000
2013	102.353
2014	106.110
2015	109.675
2016	110.050
2017	112.883
2018	121.753
2019	123.268
2020	121.634
2021	114.940
2022	117.255
2023	121.815
2024	126.097
2025	131.102
2026	135.676
2027	140.218
2028	144.688
2029	149.167