Year	gross (GPI)
1989	0.410039991140366
1990	0.375479996204376
1991	0.457910001277924
1992	0.515160024166107
1993	0.569079995155334
1994	0.673600018024445
1997	0.83814001083374
1999	0.680689990520477
2000	0.833490014076233
2001	0.674560010433197
2002	0.482719987630844
2003	0.517319977283478
2004	0.648259997367859
2005	0.717499971389771
2006	0.809300005435944
2007	0.911880016326904
2008	0.971719980239868
2009	1.00093996524811
2010	1.07147002220154
2011	1.11266994476318
2012	1.19103002548218
2013	1.21704995632172
2014	1.22739005088806
2015	1.25393998622894
2016	1.24090003967285
2017	1.20142996311188
2018	1.17842996120453
2019	1.16083002090454
2020	1.14821994304657
2021	1.14351999759674
2022	1.09369003772736