Question: What was the establishment year of the team that 's been to the NBA Finals nine times ?

text: List of NBA champions
Results by teams

The National Basketball Association (NBA) Finals is the championship series for the NBA and the conclusion of its postseason. All Finals have been played in a best-of-seven format, and are contested between the winners of the Eastern Conference and the Western Conference (formerly Divisions before 1970), except in 1950 when the Eastern Division champion faced the winner between the Western and Central Division champions. From 1946 through 1949, when the league was known as the Basketball Association of America (BAA), the playoffs were a three-stage tournament where the two semifinal winners played each other in the finals. The winning team of the series receives the Larry O'Brien Championship Trophy. The current home-and-away format in the NBA Finals is 2-2-1-1-1 (the team with the better regular-season record plays on their home court in Games 1, 2, 5, and 7), which has been used in 1947-1948, 1950-1952, 1957-1970, 1972-1974, 1976-1977, 1979-1984, and 2014-present. It was previously in a 2-3-2 format (the team with the better regular season record plays on their home court in Games 1, 2, 6, and 7) during 1949, 1953-1955, and 1985-2013, in a 1-1-1-1-1-1-1 format during 1956 and 1971, and in a 1-2-2-1-1 format during 1975 and 1978. The Eastern Conference/Division leads the Western Conference/Division in series won (39-34). The defunct Central Division, in existence during the 1949-50 NBA season when the NBA was divided into three divisions and different from the current Central Division created in 1970 when the then existing Eastern Division was upgraded as a conference, won one championship. The Boston Celtics and the Minneapolis/Los Angeles Lakers alone own almost half of the titles, having won a combined 33 of 73 championships. As of 2019[update], the defending champions are the Toronto Raptors, making history as the first team from outside of the United States to win.
Teams Win Loss Total Year ( s ) won Year ( s ) lost
Boston Celtics 17 4 21 1957 , 1959 , 1960 , 1961 , 1962 , 1963 , 1964 , 1965 , 1966 , 1968 , 1969 , 1974 , 1976 , 1981 , 1984 , 1986 , 2008 1958 , 1985 , 1987 , 2010
Los Angeles Lakers 16 15 31 1949 , 1950 , 1952 , 1953 , 1954 , 1972 , 1980 , 1982 , 1985 , 1987 , 1988 , 2000 , 2001 , 2002 , 2009 , 2010 1959 , 1962 , 1963 , 1965 , 1966 , 1968 , 1969 , 1970 , 1973 , 1983 , 1984 , 1989 , 1991 , 2004 , 2008
Golden State Warriors 6 5 11 1947 , 1956 , 1975 , 2015 , 2017 , 2018 1948 , 1964 , 1967 , 2016 , 2019
Chicago Bulls 6 0 6 1991 , 1992 , 1993 , 1996 , 1997 , 1998 -
San Antonio Spurs 5 1 6 1999 , 2003 , 2005 , 2007 , 2014 2013
Philadelphia 76ers 3 6 9 1955 , 1967 , 1983 1950 , 1954 , 1977 , 1980 , 1982 , 2001
Detroit Pistons 3 4 7 1989 , 1990 , 2004 1955 , 1956 , 1988 , 2005
Miami Heat 3 2 5 2006 , 2012 , 2013 2011 , 2014
New York Knicks 2 6 8 1970 , 1973 1951 , 1952 , 1953 , 1972 , 1994 , 1999
Houston Rockets 2 2 4 1994 , 1995 1981 , 1986
Cleveland Cavaliers 1 4 5 2016 2007 , 2015 , 2017 , 2018
Atlanta Hawks 1 3 4 1958 1957 , 1960 , 1961
Washington Wizards 1 3 4 1978 1971 , 1975 , 1979
Oklahoma City Thunder 1 3 4 1979 1978 , 1996 , 2012
Portland Trail Blazers 1 2 3 1977 1990 , 1992
Milwaukee Bucks 1 1 2 1971 1974
Dallas Mavericks 1 1 2 2011 2006
Baltimore Bullets ( original ) ( folded in 1954 ) 1 0 1 1948 -
Sacramento Kings 1 0 1 1951 -
Toronto Raptors 1 0 1 2019 -