1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 | 308.77 355.33 397.60 423.76 462.55 544.94 601.51 686.31 708.66 784.00 921.40 | 273.78 299.71 325.88 378.82 387.01 480.22 538.30 594.28 608.13 618.72 667.04 | -35.99 -56.62 -71.72 -44.94 -75.54 -64.72 -63.21 -92.03 -100.42 -165.28 -254.36 | 19 20 24 18 20 21 17 22 21 23 27 |