Question: What year was the basketball league in which TTÜ Korvpalliklubi participates internationally founded?
Context: The TTÜ Sports Hall (Estonian: "TTÜ spordihoone" ) is a multi-purpose indoor arena complex in Mustamäe, Tallinn.  It was opened in 1975 and renovated in 2001.  It is the current home arena of the Estonian Basketball League team TTÜ KK. Baltic Basketball League (BBL) is the Baltic states basketball league founded in 2004. KK Mornar (Cyrillic: КК Морнар) is a professional basketball club from Bar, Montenegro.  The club currently participates in the Montenegrin Basketball League and Balkan International Basketball League.  Internationally, the team plays in the Basketball Champions League as of the 2016–17 season. The Malaysia National Basketball League (Petronas-Molten Malaysia National Basketball League for sponsorship reason), often abbreviated to the MNBL, is the pre-eminent men's basketball league in Malaysia, organised by the Malaysia Basketball Association (MABA).  The competition started as Malaysian Basketball League (MBL) in 1981.  In 2002, MABA appointed Mr. Tan Kee Hian () to handle the competition and changed the league's name to Malaysia National Basketball League (MNBL). The USSR Premier Basketball League, or Soviet Union Premier Basketball League (also called Supreme League), was the first-tier men's professional basketball league in the former Soviet Union.  The league existed from 1923 to 1991, as the top professional basketball league of the Soviet Union, and from 1991 to 1992, as the top professional basketball league of the CIS.  In the years 1924, 1928, 1934, 1935, 1936, 1956, 1959, 1963, and 1967, the league was contested by regional teams, rather than individual sports clubs. Susanne Juranek (born 25 February 1975 in Brake, Lower Saxony) is a German cyclist born in Brake a. d. Unterweser but spend her childhood and teenager age in Goslar where she began mountainbiking.  Later she moved to Oldenburg and due to the "flatter" landscape she started to shift to cyclo-cross and street race-biking for the AGC team Bertram Roemer.  She participates internationally mainly in cyclo-cross. The Toronto Police Pipe Band is a grade one pipe band based in Toronto, Ontario, Canada.  The band performs at parades, festivals, ceremonies and funerals, and participates internationally in piping competitions. TTÜ Korvpalliklubi (English: Tallinn University of Technology Basketball Club ) is a professional basketball club based in Tallinn, Estonia.  They play in the Korvpalli Meistriliiga (KML) and internationally in the regional Baltic Basketball League.  Their home arena is the TTÜ Sports Hall. The Indonesian Basketball League, in Indonesian: "Liga Bola Basket Indonesia", often abbreviated to the IBL, is the professional men's basketball league in Indonesia, competed by 12 clubs across the country.  It is organised by Starting5 Sports Entertainment and sanctioned by Perbasi (Indonesia Basketball Association).  The competition started as Indonesian Basketball League (IBL) in 2003.  In 2010, Perbasi appointed DBL Indonesia to handle the competition and changed the league's name to National Basketball League (NBL).  After 5 years, DBL Indonesia discontinued their rights and in the Q4 of 2015, Perbasi appointed Starting5 to handle the competition and changed the league's name back into Indonesian Basketball League. Korvpalliklubi Pärnu, also known as Port of Pärnu (Estonian: "Pärnu Sadam" ) for sponsorship reasons, is a professional basketball club based in Pärnu, Estonia.  The team plays in the Korvpalli Meistriliiga (KML) and the regional Baltic Basketball League.  Their home arena is the Pärnu Sports Hall.
Answer: 2004