Except from a big spike among characters created during the summer of 2006, it seems quite stable.
Creation Month Avg(Immexpperhour)
2006-1 16.81947516
2006-2 17.53678205
2006-3 12.79256096
2006-4 19.77783809
2006-5 24.04494533
2006-6 21.60649064
2006-7 32.17871366
2006-8 31.70413542
2006-9 35.98913543
2006-10 21.36875251
2006-11 16.99561547
2006-12 15.73960797
2007-1 23.65868441
2007-2 13.70616638
2007-3 12.62939055
2007-4 15.45945913
2007-5 11.76345704
2007-6 12.47053193
2007-7 13.9537112
2007-8 13.35983749
2007-9 8.391940584
2007-10 11.60309155
2007-11 18.91447129
2007-12 19.82271289
2008-1 24.96891439
2008-2 24.52151993
2008-3 24.06545593
2008-4 15.52766654
2008-5 16.21448386
2008-6 21.08457112
2008-7 18.53823392
2008-8 19.68761528
2008-9 13.66407817
2008-10 13.29267548
2008-11 14.0384127
2008-12 17.62389109
2009-1 15.53946247
2009-2 13.68097874
2009-3 13.53749457
2009-4 21.30086861
2009-5 14.09357062
2009-6 14.77761193
2009-7 14.96031118
2009-8 16.14251202
2009-9 16.39096576
2009-10 28.50806015
