January 1989 the value has been changed from 1.0 to 10.2
January 1988 the value has been changed from 2.0 to 20.2
January 1988 the value of 1.0 has been removed
March 1988 the value of 1.0 has been removed
October 1988 the value of 1.0 has been removed
January 1989 the value of 1.0 has been removed
February 1989 the value of 1.0 has been removed
May 1989 the value of 1.0 has been removed
October 1989 the value of 1.0 has been removed
January 1988 the value has been changed from 1.0 to 15.2
October 1988 the value has been changed from 1.0 to 11.7
November 1988 the value has been changed from 1.0 to 13.3
January 1988 the value of 2.0 has been removed
March 1988 the value of 2.0 has been removed
May 1988 the value of 1.0 has been removed
August 1988 the value of 1.0 has been removed
September 1988 the value of 1.0 has been removed
January 1989 the value of 2.0 has been removed
May 1989 the value of 1.0 has been removed
June 1989 the value of 1.0 has been removed
July 1989 the value of 1.0 has been removed
September 1989 the value of 1.0 has been removed