The tourist industry earned over £63 million of foreign exchange in 1964–65 – a conservative figure which includes only direct revenue and not money spent indirectly by passengers from cruise ships, for example. The estimated real value would approach £10·4 million. New Zealand accepts for statistical use the International Union of Official Travel Organisations' definition of a “tourist”. In 1964–65 most tourists came from Australia (40,368), United States (15,958), and Britain (7,744), with respective travel receipts of approximately £3·1 million, £1·3 million, and £1·6 million. (Travel receipts exclude fares, migrants' transfers, and personal remittances.) The proportional income from British tourists is high, as they tend to stay longer (often on long working holidays) and thus spend more.