Year	Index (Units)
1980	17.631
1981	18.926
1982	19.253
1983	19.867
1984	20.489
1985	20.956
1986	22.161
1987	22.975
1988	23.877
1989	24.385
1990	25.938
1991	25.408
1992	26.594
1993	27.400
1994	28.128
1995	27.544
1996	25.870
1997	26.096
1998	28.813
1999	29.406
2000	29.774
2001	31.607
2002	32.749
2003	34.696
2004	43.257
2005	43.456
2006	44.083
2007	49.289
2008	66.485
2009	84.757
2010	80.907
2011	82.466
2012	91.465
2013	94.813
2014	100.003
2015	98.998
2016	96.724
2017	98.978
2018	102.395
2019	102.526
2020	107.889
2021	110.855
2022	112.540
2023	111.550
2024	111.336
2025	113.662
2026	116.454
2027	119.897
2028	123.655
2029	127.541