Name the number of ranks for south korea
{'header': ['Rank', 'Country', 'International tourist arrivals (2012)', 'International tourist arrivals (2011)', 'Change (2011 to 2012)', 'Change (2010 to 2011)'], 'page_title': 'World Tourism rankings', 'section_title': 'Asia and the Pacific', 'caption': 'Asia and the Pacific', 'rows': [['1', 'China', '57.7 million', '57.5 million', '+0.3%', '+3.4%'], ['2', 'Malaysia', '25.0 million', '24.7 million', '+1.3%', '+0.6%'], ['3', 'Hong Kong', '23.7 million', '22.3 million', '+6.5%', '+11.1%'], ['4', 'Thailand', '22.3 million', '19.2 million', '+16.2%', '+20.7%'], ['5', 'Macau, China', '13.5 million', '12.9 million', '+5.0%', '+8.4%'], ['6', 'South Korea', '11.1 million', '9.7 million', '+13.7%', '+11.3%'], ['7', 'Japan', '8.3 million', '6.2 million', '+34.6%', '-27.8%'], ['8', 'Indonesia', '8.0 million', '7.6 million', '+5.2%', '+9.2%'], ['9', 'Taiwan', '7.3 million', '6.0 million', '+20.1%', '+9.3%']]}