年度,發生縣市,普遍發生縣市,普遍發生鄉鎮
2005,2,2,0
2006,4,2,0
2007,4,3,3
2008,5,3,7
2009,5,4,12
2010,5,4,19
2011,8,6,23
2012,6,4,24
2013,7,5,19
2014,6,6,33
2015,7,7,34
2016,9,2,16
2017,9,4,23
2018,10,4,23
2019,11,4,23
2020,10,4,23
2021,9,4,23
2022,9,4,23