Year	gross (GPI)
1970	0.517180025577545
1971	0.523859977722168
1972	0.551569998264313
1973	0.549889981746674
1974	0.55265998840332
1975	0.562969982624054
1976	0.548520028591156
1977	0.558749973773956
1978	0.559040009975433
1979	0.5417799949646
1980	0.541310012340546
1981	0.531440019607544
1982	0.519980013370514
1983	0.51266998052597
1984	0.506510019302368
1985	0.493149995803833
1986	0.490880012512207
1987	0.502910017967224
1988	0.480749994516373
1989	0.476069986820221
1990	0.495200008153915
1991	0.493900001049042
1992	0.498010009527206
1993	0.520919978618622
1994	0.545669972896576
1995	0.573170006275177
1996	0.603399991989136
1997	0.63401997089386
1998	0.667840003967285
1999	0.704659998416901
2000	0.713169991970062
2001	0.710470020771027
2002	0.712849974632263
2003	0.711839973926544
2004	0.726069986820221
2005	0.738259971141815
2006	0.741739988327026
2007	0.7535600066185
2008	0.757350027561188
2009	0.769810020923615
2010	0.792119979858398
2011	0.782469987869263
2012	0.80009001493454
2013	0.8125
2014	0.841769993305206
2015	0.778550028800964
2016	0.774720013141632
2017	0.76868999004364
2018	0.775309979915619
2019	0.829750001430511
2020	0.831809997558594
2021	0.830290019512177
2022	0.830250024795532