Year	gross (GPI)
1989	1.0137300491333
1990	1.03320002555847
1991	1.137619972229
1992	1.11582005023956
1993	1.14599001407623
1994	1.17561995983124
1995	1.21088004112244
1996	1.23110997676849
1997	1.23239004611969
1998	1.23475003242493
1999	1.24924004077911
2000	1.23775994777679
2001	1.25318002700806
2002	1.22896003723145
2003	1.2540899515152
2004	1.2755800485611
2005	1.26222002506256
2006	1.25881004333496
2007	1.19105005264282
2008	1.14848005771637
2009	1.14145994186401
2010	1.13125002384186
2012	1.15594005584717
2013	1.20236003398895
2014	1.20551002025604
2015	1.20587003231049
2017	1.25958001613617
2018	1.25806999206543
2019	1.28764998912811
2020	1.30237996578217
2021	1.32642996311188
2022	1.32702004909515