| Years ended March 31 | |||
| in thousands, except per share amounts | 1996 | 1995 | Change |
| Net revenues | $560,802 | $355,130 | +58% |
| Research and development | $64,600 | $45,318 | +43% |
| Operating income | $165,756 | $92,048 | +80% |
| Net income | $101,454 | $59,278 | +71% |
| Net income per share | $ 1.28 | $ 0.80 | +60% |
| Stockholders' equity | $368,244 | $243,971 | +51% |
| Total employees at year-end | 1,201 | 868 | +38% |