The European Union allows most property and casualty insurers to sell their products across international borders (although individual member states can place certain additional restrictions on them). Countries with strong, central national governments - such as Japan, the United Kingdom, and France - regulate insurance at the national level only. Countries with federal systems have a variety of options for regulating insurance. Canada’s system, in which insurers can opt for provincial or federal regulation, is most directly comparable to what would exist under an OFC in the United States. While most Canadian insurers are regulated at the provincial level, the great majority of the market - about 80 percent of total premiums - is comprised of companies operating under federal charters.