Angela Merkel tops Forbes Most Powerful Women list British-born US Vogue editor-in-chief Anna Wintour saw her ranking rise by 10 places to 41. The prestigious list, which is in its 10th year, uses rankings of wealth, media presence and impact to rate its candidates. In a sign of the growing importance of social media, the 100 women on the 2013 list boast a combined Twitter following of more than 153 million - up from the 90 million who followed last year's. Members of the 2013 ranking represent women in technology, politics, business, media, entertainment and NGOs. There were also 14 newcomers to the list, including South Korea's first female president, Park Geun-hye, Italian particle physicist Fabiola Gianotti and the world's youngest self-made female billionaire and head of Spanx, Sara Blakely. The 24 corporate CEOs on the list lead companies with a combined $893 billion in 2012 revenues while eight heads of state run nations with a combined Gross Domestic Product of $9.9 trillion. Forbes Most Powerful Women Top 10: Angela Merkel, German Chancellor Dilma Rousseff, Brazil President Melinda Gates, Co-Chair, Bill & Melinda Gates Foundation Michelle Obama, US First Lady Hillary Clinton, Former US Secretary of State Sheryl Sandberg, COO, Facebook Christine Lagarde, Managing Director, IMF Janet Napolitano, US Homeland Security Secretary Sonia Gandhi, President, Indian National Congress Party Indra Nooyi, CEO PepsiCo