Ratings
| Season | Nielsen ranking |
Average viewership |
|---|---|---|
| 1977-1978 | N/A (summer) | |
| 1978-1979 | N/A (summer) | |
| 1979-1980 | no data available | |
| 1980-1981 | no data available | |
| 1981-1982 | no data available | |
| 1982-1983 | no data available | |
| 1983-1984 | no data available | |
| 1984-1985 | #55 | 13.7 million |
| 1985-1986 | #40 | 15.5 million |
| 1986-1987 | #43 | 14.2 million |
| 1987-1988 | #54 | 12.6 million |
| 1988-1989 | #40 | 14.1 million |
| 1989-1990 | #44 | 13.5 million |
| 1990-1991 | #33 | 13.5 million |
| 1991-1992 | #22 | 14.4 million |
| 1992-1993 | #13 | 15.1 million |
| 1993-1994 | #15 | 14.5 million |
| 1994-1995 | #17 | 14.0 million |
| 1995-1996 | #11 | 13.6 million |
| 1996-1997 | #12 | 12.8 million |
| 1997-1998 | #19 | 15.0 million |
| 1998-1999 | #22 | 13.7 million |
| 1999-2000 | #33 | 12.2 million |
| 2000-2001 | #44 | 11.5 million |
| 2001-2002 | #60 | 9.7 million |
| 2002-2003 | #76 | 8.8 million |
| 2003-2004 | #58 | 9.6 million |
| 2004-2005 | #66 | 8.5 million |
| 2005-2006 | #75 | 8.0 million |
| 2006-2007 | #106 | 7.5 million |
| 2007-2008 | #114 | 6.5 million |
| 2008-2009 | #76 | 7.0 million |
| 2009-2010 | #77 | 6.3 million |
| 2010-2011 | #100 | 5.8 million |
| 2011-2012 | #107 | 5.6 million |
Read more about this topic: 20/20 (U.S. TV series)