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According to data protection firm Datto , 87 % of European IT service providers it surveyed said their SMB customers had been hit by a ransomware attack at some point during the previous 12 months .
 the previous 12 months: time
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: ransom 
  Option: victim, attacker, payment method, attack pattern, damage amount, tool, time, price, place 
Text: {0} 
Answer:
 the previous 12 months: time