1991 28 3.9316e+011 3.2817e+011 2.7214e+011 2.2435e+011 1.8398e+011 1.0979e+011 6.3961e+010 2.0565e+010 6.2778e+009 1.8479e+009 5.2957e+008 1.4872e+008 4.1107e+007 1.1220e+007 8.1203e+005 5.7132e+004 3.9398e+003 2.6772e+002 1.7994e+001