Graph the time series. Does a linear trend appear

TV ratings provided by Nielsen Media Research show the percentage of TV-owning households tuned in to a particular program. The following data show the rating for the top-rated TV show of each season from 1987-1988 to 2000-2001 (The New York Times Almanac 2002):

Season Rating
1987-1988 27.8
1988-1989 25.5
1989-1990 23.4
1990-1991 21.6
1991-1992 21.7
1992-1993 21.6
1993-1994 21.9
1194-1995 20.5
1995-1996 22.0
1996-1997 21.2
1997-1998 22.0
1998-1999 17.8
1999-2000 16.6
2000-2001 17.4


Graph the time series. Does a linear trend appear?

No linear trend