Year	US Dollars adjusted for inflation)
1950	1096
1951	1263
1952	1150
1953	1060
1954	1107
1955	1122
1956	1156
1957	1183
1958	1173
1959	1101
1960	1159
1961	1111
1962	1176
1963	1182
1964	1223
1965	1243
1966	1328
1967	1338
1968	1255
1969	1295
1970	1134
1971	1157
1972	1206
1973	1161
1974	1229
1975	1181
1976	1143
1977	1175
1978	1237
1979	1251
1980	1261
1981	1237
1982	1237
1983	1195
1984	1195
1985	1149
1986	1237
1987	1266
1988	1307
1989	1333
1990	1351
1991	1336
1992	1280
1993	1258
1994	1261
1995	1281
1996	1301
1997	1305
1998	1285
1999	1253
2000	1268
2001	1257
2002	1216
2003	1218