far higher than any other country, while the number per capita is comparable to Vietnam and Singapore, and lower than several other countries, including Saudi Arabia, Iran and Iraq. The number of executions has dropped steadily in the 2000s, and significantly since 2007, when the Supreme People's Court regained the power to review all death sentences; for instance, the Dui Hua Foundation estimates that China executed 12,000 people in 2002, 6,500 people in 2007, and roughly 2,400 in 2013 and 2014. Given conservative and variable estimates of executions in China, executions in China account for more than 58% in 2009 and 65% in 2010 of those worldwide. The exact numbers of people executed in China is classified as a state secret; occasionally death penalty cases are posted publicly by the judiciary, as in certain high-profile cases. One such example was the execution of former State Food and Drug Administration director Zheng Xiaoyu, which was confirmed by both state television and the official Xinhua News Agency. Other media, such as Internet message boards, have become outlets for confirming death penalty cases usually after a sentence has been carried out. Because of the inaccessibility to official statistics of the number of executions that occur within the death penalty system, academic researchers must use data compiled by NGOs such as Amnesty International, which is the most cited source of reports regarding rates of execution statistics. In 2009, Amnesty International counted 1718 executions as having taken place during 2008 (which equates to 0.0001%, or 1 in 1,000,000 of the Chinese population), based on all information available. Amnesty International believed that the total figure was likely to be much higher. According to "The Death Penalty in China: Reforms and Its Future", "it also represents the most conservative estimate of death sentences and executions in China due to the following accounting rules: 1) when there is doubt of accuracy, figures were excluded; 2) where two conflicting reports existed, the lower figure was used; 3) when a combined figure of death sentences and prison sentences was given, only one death sentence was recorded; and 4) when a group was sentenced to death, only one sentence was entered." In 2015, billionaire Liu Han was executed for running a criminal gang and ordering at least three murders. The executions came nine years after Yuan Baojing, another billionaire and Liu Han's long time rival, was also put to death in