restored get_annual_occurrence_rates
restored get_annual_occurrence_rates


Former-commit-id: 3411dc39f66eacf96c24d0a5093dea74b5f59552 [formerly 3411dc39f66eacf96c24d0a5093dea74b5f59552 [formerly a2e4f27c048dc0fc1ab869a8b3d3d5385adcdff1]]
Former-commit-id: 151f687fa839176d47d12ff13c50ab7a5b5af7a1
Former-commit-id: 0d5bcd9f88d9b27909604b7f712b0df8b55a8989
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine