What is the smallest population recorded back in 2002?
{'header': ['Commune', 'Area (km 2 )', '2002 population', 'Density (km 2 )', 'Government website'], 'page_title': 'El Tamarugal', 'section_title': 'Administration', 'caption': 'Administration', 'rows': [['Pozo Almonte (Capital)', '13,765.8', '10830', '0.8', 'link'], ['Pica', '8,934.3', '6178', '0.7', 'link'], ['Huara', '10,474.6', '2599', '0.2', 'link'], ['Colchane', '4,015.6', '1649', '0.4', 'link'], ['Camiña', '2,200.2', '1275', '0.6', 'none']]}