Which country has played in the first 20 Hopman Cup tournaments?

Question

The Hopman Cup is a teams competition where each country has a male and a female player. After a men's singles match and a women's singles match are played a mixed doubles match is played between the two teams. The country with most wins gets the tie. Can someone tell me that which country has played in the first 20 Hopman Cup tournaments?

Answer 1

Australia has played at every one of the first 20 Hopman Cups, including appearances by Lleyton Hewitt, Todd Reid, Pat Cash, Pat Rafter and several others. USA did not play at the inaugural Hopman Cup. South Africa played at 9 of the first 20 Hopman Cups, as did Switzerland.