lvl 117 Basileus: 5.87%
lvl 117 Ephor: 4.7%
lvl 117 Elder: 3.52%
lvl 110 Elder: 3%
lvl 104 Noble: 1.7%
Seems like each nobility's lvl gives additional bonus:
-0.125% for Basileus
-0.1% for Ephor
-0.075% for Elder
-0.05% for Noble
lvl 117 Ephor: 4.7%
lvl 117 Elder: 3.52%
lvl 110 Elder: 3%
lvl 104 Noble: 1.7%
Seems like each nobility's lvl gives additional bonus:
-0.125% for Basileus
-0.1% for Ephor
-0.075% for Elder
-0.05% for Noble