There is a difference between costs, damages, and losses and certainly insured losses and insurable losses are other important categories.
But see the UN report below:
Disasters cost $366 billion in 2011: UN
Geneva (AFP) Jan 18, 2012 –
Natural disasters such as the huge earthquake and tsunami that struck Japan caused a record $366 billion (285 million euros) damage in 2011, the UN disaster risk reduction agency UNISDR said on Wednesday. A total of 29,782 people were killed in 302 disasters last year, the body said. Storms and floods accounted for up to 70 percent of catastrophes but earthquakes were the biggest killer. … more