Year	gross (GPI)
1974	0.49957001209259
1975	0.529160022735596
1976	0.493600010871887
1977	0.590569972991943
1978	0.592490017414093
1980	0.606090009212494
1988	0.607800006866455
1989	0.628880023956299
1990	0.740360021591187
1991	0.780730009078979
1992	0.75042998790741
1993	0.806240022182465
1994	0.788950026035309
1999	1.23456001281738
2000	1.24753999710083
2003	1.32146000862122
2004	1.32047998905182
2008	1.35783994197845
2010	1.14548003673553
2012	1.28145003318787
2013	1.28149998188019
2014	1.27435994148254
2015	1.27470004558563
2016	1.2813800573349
2017	1.27019000053406
2018	1.27251994609833
2019	1.2847900390625