Annual (Financial) Percent 1976-03-31 54.7 1977-03-31 54.1 1978-03-31 53.5 1979-03-31 51.6 1980-03-31 48.3 1981-03-31 51.2 1982-03-31 49.5 1983-03-31 48.4 1984-03-31 48.8 1985-03-31 48.1 1986-03-31 48 1987-03-31 46.6 1988-03-31 44.2 1989-03-31 38.7 1990-03-31 34 1991-03-31 32.6 1992-03-31 33.9 1993-03-31 39.5 1994-03-31 44.8 1995-03-31 48.2 1996-03-31 50.6 1997-03-31 50.6 1998-03-31 47.8 1999-03-31 45.5 2000-03-31 41.9 2001-03-31 39 2002-03-31 37