1960 12 3.4412e+012 3.0614e+012 2.7011e+012 2.3661e+012 2.0597e+012 1.4228e+012 9.5709e+011 4.0860e+011 1.6508e+011 6.4179e+010 2.4257e+010 8.9740e+009 3.2647e+009 1.1718e+009 1.4633e+008 1.7711e+007 2.0948e+006 2.4342e+005 2.7895e+004