declined (a decline)
Reached a plateau (only used when the trend is up and then levels off)
grew (a growth)
increased (an increase)
fluctuated (fluctuations, unstability)
fell (a fall)
escalated (an escalation)
plummeted
was volatile
tumbled (a tumble)
remained almost the same (a period of almost no change)
rocketed
dropped (a drop)
plunged (a plunge)
was erratic
shot up
crashed ( a crash)
decreased (a decrease)
Remained stable (stability)
Stabilized (stability)
went down ( a downward trend)
rose (a rise)
Levelled off/ levelled out (the levelling off/out)
developed (a development)
