The People's Republic of China became more influential economically in the 1990s and 2000s and was beginning to be widely recognized as an emerging superpower. In 2010, China became the world's second largest economy by nominal GDP and became the largest economy since 2014 measured by GDP PPP surpassing the United States which previously held that position. At the same time, numerous social problems emerged and intensified. As Paramount leader Jiang Zemin, NPCSC Chairman Li Peng and PRC Premier Zhu Rongji, gradually retired from their position of power, "fourth-generation" leaders, led by CPC General Secretary Hu Jintao and Premier Wen Jiabao, faced with increasing social unrest, attempted to steer the country towards a new direction. From the path of focusing solely on economic development, Hu and Wen placed focus on creating an overall balance under the idea of the "Scientific Outlook on Development" to create a "socialist harmonious society". In this process, there was an unprecedented shift in stance towards favouring rural development and farmers, as well as other generally populist policies. The Hu-Wen government, on the same token, attempted to restrict some personal freedoms, especially those associated with political content on the Internet.