shows on broadcast networks had twice as many depictions of violence against women in 2009 than in 2004. In November 2010, the PTC released a study, Habitat for Profanity: Broadcast TV's Sharp Increase in Foul Language, which claims that there was a sharp rise in the usage of profanity between 2005 and 2010—during the 8 pm to 9 pm ET/PT time period commonly referred to them as the Family Viewing Hour, the PTC claimed that there were 111 instances of profanity during this hour in 2010 versus 10 in 2005; during all of prime time, 276 instances in 2010 against 11 in 2005. The study claimed that there was a 69.3% increase in prime time in general between 2005 and 2010, with the Fox network being heavily accused of bringing a 269% increase for the network during that period. The study also claimed instances in which there was profanity, but the offending word was bleeped out. Entertainment reviews and analysis The PTC's activities extend to evaluation, rating, and educating around broadcast TV programs according to a traffic light system across three categories of sex, violence and profanity, accumulating to an overall rating based on the ratings of these three categories. The guide has been in use since the 1995–96 season using the traffic light system. In the PTC's definition of its traffic light system, green light indicates that the program is "appropriate for all ages", a yellow light indicates that the program "would be unsuitable for children under the age of 14", and a red light indicates that the program is "appropriate for adult audiences only". Every television season since 1995–96, the council has released a list of the best and worst prime-time television programs for family viewing. The PTC's website includes the guide from the 1996-97 season at the earliest. Starting with the 2005–2006 season, their list was based on their traffic light system as well as Nielsen Media Research ratings of viewership among children ages 2–17 of certain shows. Popular shows that have frequently been praised as the most family-friendly programs on television include George Lopez, 7th Heaven, Touched by an Angel, Home Improvement, Family Matters, Sabrina the Teenage Witch, Boy Meets World, Extreme Makeover: Home Edition, American Idol, Dancing with the Stars, NBC Sunday Night Football, Deal or No Deal, and Who Wants to Be a Millionaire. Popular shows frequently named "Worst of the Season" include American