Year	gross (GPI)
1990	1.0198700428009
1998	0.922869980335236
2001	1.0306099653244
2014	1.05311000347137
2015	1.06901001930237
2016	1.03702998161316
2018	1.01436996459961
2019	1.01756000518799
2020	1.01226997375488
2021	1.00800001621246