Mossack Fonseca is considered the fifth-largest provider of offshore services.

Of the companies appearing in the firm’s files, one of every two were incorporated in the British Virgin Islands, making it the firm’s No. 1 tax haven.

Niue, a small South Pacific island nation with a population of about 1,000 people, ranks as the firm’s No. 5 tax haven.

The most active clients by number of offshore company incorporations were from Hong Kong, Switzerland and the United Kingdom.