Using the data supplied by NOAA National Weather Service, 19,450 tornadoes struck the United States between 2000 and 2014. The percentage for each month is listed here.

January................................ 2.4%
February.............................. 3.0%
March................................... 6.7%

April.................................... 16.9%
May..................................... 21.2%
June....................................  17.4%
July.......................................  8.0%
August.................................  5.7%
September..........................  5.9%

October...............................  4.9%
November...........................  4.9%
December...........................  2.8%

The monthly number of tornadoes for 2015 was recorded. Is there enough statistical evidence at the 5% significance level to infer that the percentages have changed?