Annual (Financial) Percent 1976-03-31 40.5 1977-03-31 40.9 1978-03-31 41.4 1979-03-31 40.3 1980-03-31 37.8 1981-03-31 40.9 1982-03-31 39.4 1983-03-31 39.9 1984-03-31 41 1985-03-31 40.7 1986-03-31 41.8 1987-03-31 41.6 1988-03-31 39.9 1989-03-31 35.3 1990-03-31 31.2 1991-03-31 29.9 1992-03-31 31.3 1993-03-31 36.6 1994-03-31 41.8 1995-03-31 45.1 1996-03-31 47.7 1997-03-31 48 1998-03-31 45.4 1999-03-31 43.3 2000-03-31 39.9 2001-03-31 37 2002-03-31 35.2