Year	gross (GPI)
1982	1.08545005321503
1983	1.07521998882294
1985	1.07544994354248
1986	1.0718400478363
1992	1.01503002643585
1993	1.01801002025604
1995	1.00167000293732
1997	1.1091400384903
1999	0.975399971008301
2002	1.01610994338989
2004	0.981630027294159
2005	0.979839980602264
2006	0.980809986591339