year    cases  deaths
1981 	339 	130
1982 	1201 	466
1983 	3153 	1511
1984 	6368 	3526
1985 	12044 	6996
1986 	19404 	12183
1987 	29105 	16488
1988 	36126 	21244
1989 	43499 	28054
1990 	49546 	31836
1991 	60573 	37106
1992 	79657 	41849
1993 	79879 	45733
1994 	73086 	50657
1995 	69984 	51414
1996 	61124 	38074
1997 	49379 	21846
1998 	43225 	19005
1999 	41356 	18491