climb, go up, ascend, shoot up，creep up, surge, boom, accrue,
leap, soar, jump, increase, rally, rise, rocket, improve,
go down, fall, fall off, drop, slump, decline, decrease, plummet, slide, slip,
shrink, dip, reduce, descend, sink, subside, ebb, creep down,
top out, peak, reach a peak, reach the highest point, peak at..,
level out, even out, remain stable/still/steady, stay constant,
keep its stability, remain unchanged...
significantly, markedly, surprisingly, noticeably, substantially...
steadily, smoothly, slowly, marginally, gradually, moderately, mildly...
fluctuate, witness/display/demonstrate a fluctuation,
go ups and downs, increase with fluctuation(波动式增长)