Year	gross (GPI)
1970	0.802999973297119
1971	0.800189971923828
1972	0.800580024719238
1973	0.794790029525757
1974	0.794290006160736
1975	0.793630003929138
1976	0.790880024433136
1977	0.801689982414246
1978	0.802579998970032
1979	0.799090027809143
1980	0.79365998506546
1981	0.780979990959167
1982	0.794979989528656
1983	0.789290010929108
1984	0.784720003604889
1985	0.786779999732971
1986	0.776040017604828
1987	0.768630027770996
1988	0.787819981575012
1989	0.793569982051849
1990	0.797349989414215
1991	0.807110011577606
1992	0.817409992218018
1993	0.827080011367798
1994	0.828029990196228
1995	0.834529995918274
1996	0.839699983596802
1997	0.856970012187958
1998	0.882059991359711
1999	0.90719997882843
2000	0.919390022754669
2001	0.92602002620697
2002	0.954230010509491
2003	0.955399990081787
2004	0.967100024223328
2005	0.982760012149811
2006	1.00599002838135
2007	1.01206994056702
2008	1.01934003829956
2009	1.02359998226166
2010	1.02447998523712
2011	1.02617001533508
2012	1.04730999469757
2013	1.07017004489899
2014	1.08358001708984
2015	1.08458995819092
2016	1.09482002258301
2017	1.09970998764038
2018	1.10899996757507
2019	1.12155997753143
2020	1.12331998348236
2021	1.12119996547699
2022	1.10950994491577