Below is my attempt at a timeline of developments in the Bigfoot world for the past 30 years. I've tried to include significant events including research conducted, evidence gathered, hoaxes, and media phenomena. Let me know what I've missed.
1991
First broadcast of the TV series "Harry and the Hendersons."
1993
Klamath Screams recorded.
"Harry and the Hendersons" cancelled.
1994
Freeman Footage recorded.
Ohio Howl recorded. (The Ohio Howl is later used in many "call blasting" experiments.)
1995
Bigfoot Field Researchers Organization founded.
Redwoods Footage recorded.
1996
Memorial Day Footage recorded.
New York Baby Footage recorded.
Snow Walker Footage (hoax) recorded.
1997
Doerr Skunk Ape Photo taken.
Landis publicly claims that Chambers made an ape suit for the Patterson-Gimlin Film.
1998
International Society of Cryptozoology disbands.
Glickman publishes "Toward a Resolution of the Bigfoot Phenomenon."
Fahrenbach publishes "Sasquatch: Size, Scaling, and Statistics."
Shealy Skunk Ape Photos taken.
BBC series "X-Creatures" attempts to replicate the Patterson-Gimlin Film.
2000
Skookum Cast discovered.
Chilcutt studies dermal ridges in footprint casts.
Shealy Skunk Ape Footage recorded.
2002
Ray Wallace dies; afterwards family members claim he was involved in hoaxing the Patterson-Gimlin Film.
2003
Davis begins work on the Patterson-Gimlin Film.
2004
Greg Long publishes "The Making of Bigfoot," promoting the claims of Bob Heironimus and Philip Morris regarding their involvement in hoaxing the Patterson-Gimlin Film.
2005
Davis releases a stabilized version of the Patterson-Gimlin Film.
Sonoma Footage hoaxed by Penn and Teller.
Biscardi promotes a "captured Bigfoot" hoax.
2006
Davis claims that the Patterson-Gimlin Film subject is a "Digger Indian."
Jack Link's begins the popular "Messin' with Sasquatch" ad campaign.
2008
Davis claims that the Patterson-Gimlin Film documents a "Bigfoot massacre."
Dyer and Whitton perpetrate a "frozen Bigfoot" hoax.
2009
Lozier et al. publish an ecological niche modeling study concluding that black bear misidentification is the source of the Bigfoot phenomenon.
Munns releases "The Munns Report" on his analysis of the Patterson-Gimlin Film.
2010
Nelson publishes "Sasquatch Phonetic Alphabet and Transcription Standard" based on his analysis of the 1971 Berry-Morehead Tapes.
2011
Relict Hominid Inquiry established.
First broadcast of "Finding Bigfoot."
2012
Ketchum issues a press release stating that her DNA analysis had identified Bigfoot as a hybrid of Homo sapiens and an unknown primate species.
2014
University of Oxford and Cantonal Museum of Zoology publish a DNA analysis of alleged Bigfoot hair samples, none of which were validated as Bigfoot in origin.
Dyer hoaxes a shooting of Bigfoot.
2018
"Finding Bigfoot" cancelled.