The formation of the Tourist and Health Resorts Department in 1901 marked the beginning of tourism management and promotion in New Zealand. Over the decades that followed, tourism infrastructure expanded through new accommodations, transportation services and attractions. World events like wars and economic downturns caused declines in visitors, but tourism numbers recovered and continued to grow steadily. By the modern day, tourism has become New Zealand's largest industry, contributing over 10% to GDP and employing one in ten New Zealanders while earning $61 million per day.