Cyclones number/per decade, decades 1851-60 through 2001-10 from Blake & Gibney, 2011 Dec All 3,4,5 1 18 6 2 15 1 3 20 7 4 22 5 5 21 8 6 18 4 7 20 7 8 15 5 9 19 8 10 24 10 11 18 9 12 14 6 13 12 4 14 15 4 15 14 5 16 19 7 17 10 3 fino a 11.10.18