2139
However , attacks over the past year have proven that infecting organizations with ransomware can result in much higher payouts .
 over the past year: 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:
 over the past year: time