Year current US$ 1980 59999.9986588955 1989 150000.005960464 1990 469999.998807907 1991 670000.016689301 1992 1929999.94754791 1993 2559999.94277954 1994 2670000.07629395 1995 1480000.01907349 1996 1240000.0095367401 1997 879999.995231628 1998 509999.99046325695 1999 910000.026226044 2016 976230.084896088 2017 1066769.9575424201 2019 1680.22001162171