As of July 2017, how many people, over the years, have been the principal television voice of Kermit the Frog?

Kermit the Frog is a Muppet character and Jim Henson's most well-known creation. Introduced in 1955, Kermit is the straight man protagonist of numerous Muppet productions. Many people have given voice to Kermit on film, in live performances and on television, but there have only been 2 principal voices since his creation. Jim Henson originated the character in 1955 on his local television series, Sam and Friends. He continued to perform the character until his death in 1990. Henson's last known performance as Kermit was for an appearance on The Arsenio Hall Show to promote The Muppets at Walt Disney World. Henson died twelve days after that appearance.

Following Henson's death, veteran Muppet performer Steve Whitmire was named Kermit's new performer. His first public performance as Kermit was at the end of the television special The Muppets Celebrate Jim Henson. He has remained Kermit's principal performer since then.

On July 10, 2017, Disney announced that Whitmire would be departing from the Muppets, including the role of Kermit, and that veteran puppeteer Matt Vogel, would be taking over as the voice and puppeteer for Kermit. Vogel will make his first official appearance as the frog on July 17, 2017 in the next installment of the 'Muppets Thought of the Week' web series.(This is not tv or film)

On July 13, 2017, Whitmire announced that he had not chosen to leave the role, but rather, had been recast in October of 2016.