Economic growth continued during Benigno Aquino III's administration, which pushed for good governance and transparency. In 2015, a clash which took place in Mamasapano, Maguindanao killed 44 members of the Philippine National Police-Special Action Force, resulting in efforts to pass the Bangsamoro Basic Law reaching an impasse. Former Davao City mayor Rodrigo Duterte won the 2016 presidential election, becoming the first president from Mindanao. Duterte launched an anti-drug campaign and an infrastructure program. The implementation of the Bangsamoro Organic Law led to the creation of the autonomous Bangsamoro region in Mindanao. In early 2020, the COVID-19 pandemic reached the country causing the gross domestic product to shrink by 9.5%, the country's worst annual economic performance since records began in 1947.