what was the net change in airliner count during 2016?
Important information:
text_4: during 2016 , american took delivery of 55 new mainline aircraft and retired 71 aircraft .
table_13: the embraer 190 of average seating capacity is 99 ; the embraer 190 of average age ( years ) is 9.2 ; the embraer 190 of owned is 20 ; the embraer 190 of leased is 2014 ; the embraer 190 of total is 20 ;
table_15: the total of average seating capacity is ; the total of average age ( years ) is 10.3 ; the total of owned is 519 ; the total of leased is 411 ; the total of total is 930 ;
Reasoning Steps:
Step: minus1-1(55, 71) = -16
Program:
subtract(55, 71)
Program (Nested):
subtract(55, 71)

Please answer the following financial question based on the context provided. Make sure to give the answer in raw number, not in percentage and without any units. If the question asks for percentage the value should be less than 1
Context:
table of contents item 2 . properties flight equipment and fleet renewal as of december 31 , 2016 , american operated a mainline fleet of 930 aircraft . in 2016 , we continued our extensive fleet renewal program , which has provided us with the youngest fleet of the major u.s . network carriers . during 2016 , american took delivery of 55 new mainline aircraft and retired 71 aircraft . we are supported by our wholly-owned and third-party regional carriers that fly under capacity purchase agreements operating as american eagle . as of december 31 , 2016 , american eagle operated 606 regional aircraft . during 2016 , we increased our regional fleet by 61 regional aircraft , we removed and placed in temporary storage one embraer erj 140 aircraft and retired 41 other regional aircraft . mainline as of december 31 , 2016 , american 2019s mainline fleet consisted of the following aircraft : average seating capacity average ( years ) owned leased total .
Table
                       | average seating capacity | average age ( years ) | owned | leased | total
airbus a319            | 128                      | 12.8                  | 19    | 106    | 125  
airbus a320            | 150                      | 15.5                  | 10    | 41     | 51   
airbus a321            | 178                      | 4.9                   | 153   | 46     | 199  
airbusa330-200         | 258                      | 5.0                   | 15    | 2014   | 15   
airbusa330-300         | 291                      | 16.4                  | 4     | 5      | 9    
boeing737-800          | 160                      | 7.7                   | 123   | 161    | 284  
boeing757-200          | 179                      | 17.9                  | 39    | 12     | 51   
boeing767-300er        | 211                      | 19.5                  | 28    | 3      | 31   
boeing777-200er        | 263                      | 16.0                  | 44    | 3      | 47   
boeing777-300er        | 310                      | 2.8                   | 18    | 2      | 20   
boeing787-8            | 226                      | 1.3                   | 17    | 2014   | 17   
boeing787-9            | 285                      | 0.2                   | 4     | 2014   | 4    
embraer 190            | 99                       | 9.2                   | 20    | 2014   | 20   
mcdonnell douglasmd-80 | 140                      | 22.0                  | 25    | 32     | 57   
total                  |                          | 10.3                  | 519   | 411    | 930  
.
Question: 
what was the net change in airliner count during 2016?
Important information:
text_4: during 2016 , american took delivery of 55 new mainline aircraft and retired 71 aircraft .
table_13: the embraer 190 of average seating capacity is 99 ; the embraer 190 of average age ( years ) is 9.2 ; the embraer 190 of owned is 20 ; the embraer 190 of leased is 2014 ; the embraer 190 of total is 20 ;
table_15: the total of average seating capacity is ; the total of average age ( years ) is 10.3 ; the total of owned is 519 ; the total of leased is 411 ; the total of total is 930 ;
Reasoning Steps:
Step: minus1-1(55, 71) = -16
Program:
subtract(55, 71)
Program (Nested):
subtract(55, 71)
