Each year the law school enrolls approximately 210 graduate students from more than 50 countries with experience in all areas of the legal profession, including academia, the judiciary, public service, civil rights and human rights advocacy, non-governmental organizations, international organizations, and private practice. Graduate students are an important component of the law school community. They participate in many co-curricular activities, including student journals, moot courts, and student organizations. Graduate students also organize and speak at conferences, workshops, and colloquia on current legal issues. Since 2005, 24 Columbia Law alumni have served as judicial clerks at the U.S. Supreme Court, one of the most distinguished appointments a law school graduate can obtain. This record gives Columbia a ranking of for supplying such law clerks for the period 2005–2017. Columbia has placed 135 clerks at the U.S. Supreme Court in its history, one of the top five law schools for clerks; this group includes Lee Bollinger, who clerked for Chief Justice Warren Burger in the 1972 Term, and is now the president of Columbia University. According to Columbia Law School's official 2014 ABA-required disclosures, 93.8% of the Class of 2014 obtained full-time, long-term, JD-required employment ten months after graduation. Columbia Law School's Law School Transparency under-employment score was 1.6%, indicating the percentage of the Class of 2013 unemployed, pursuing an additional degree, or working in a non-professional, short-term, or part-time job nine months after graduation. The total cost of attendance (indicating the cost of tuition, fees, and living expenses) at Columbia Law School for the 2019–2020 academic year was $101,345. The Law School Transparency estimated debt-financed cost of attendance for three years is $357,503. Theodore Roosevelt, the 26th president of the United States and the 25th vice president of the United States, and Franklin D. Roosevelt, the 32nd president of the United States, were students at CLS; neither graduated from CLS, but they both received honorary J.D.s in October 2008. Former President of Georgia, Mikheil Saakashvili, received his LL.M. at Columbia; Giuliano Amato, twice former Prime Minister of Italy (1992–93 and 2000–2001), was also a CLS graduate. Graduates of the law school have served as members of the United States President's Cabinet and non-U.S. government executive cabinets, including U.S. Secretary of State, Secretary of Treasury, Secretary of War (now U.S. Secretary of Defense), and Attorney General, among others.