Year	Index (Units)
1991	27.098
1992	30.471
1993	36.628
1994	47.580
1995	41.572
1996	44.941
1997	50.677
1998	45.931
1999	47.458
2000	46.179
2001	49.683
2002	47.180
2003	46.494
2004	51.172
2005	52.681
2006	54.314
2007	59.140
2008	64.423
2009	67.921
2010	72.626
2011	84.721
2012	89.322
2013	92.059
2014	93.138
2015	94.217
2016	95.937
2017	98.080
2018	98.610
2019	100.301
2020	98.251
2021	98.408
2022	101.704
2023	103.636
2024	108.559
2025	111.056
2026	113.277
2027	115.543
2028	117.854
2029	120.211