Question: Since when has the co-anchor of "The Today Show" that Danny Jelaca has worked with held that position?

Context articles: Tyler Mathisen
Alexandra Wallace
Robert Bendick
Darlene Rodriguez
Savannah Guthrie
Mike Leonard (journalist)
Oz Pearlman
Joe Beam
Danny Jelaca
Carl Quintanilla

Tyler Mathisen is now Managing Editor of CNBC Business News and the host of "High Net Worth".
 He also co-hosts CNBC's "Power Lunch" and "Nightly Business Report".
 Previously, he was the co-anchor of such programs as "Closing Bell" and "Business Center" before being promoted to the role of Managing Editor.
 In June 2004 he married Joanne Lamarca, a producer for "The Today Show" on NBC.
Alexandra Wallace (born 1965) is a Senior Vice President of NBC News where she oversees the Today Show and NBC Nightly News with Lester Holt.
 She graduated from Columbia University, where she majored in English literature in 1988, after which she spent a year working in the media industry in London.
 She then worked for CBS News for seventeen years before joining NBC to work on the Today Show.
 She lives in New York City with her husband and two children.
Robert Bendick (February 8, 1917 - June 22, 2008) was the producer of the "Today Show" between the years of 1953-1955, and 1958-1960.
 Robert Bendick attended New York University, and the C.H. White school of Photography.
 Learning to use a camera Bendick worked for "National Geographic" and "Time" magazines.
 Eventually hired onto CBS in 1941 and one of the original three cameramen.
 Ultimately working his way up to producer, he produced the "Today Show", and other major televised shows for both NBC and CBS during what is coined the golden years of television.
 One of Bendick's most famous productions come from a series called "Wide Wide World", a documentary series that aired on NBC Sunday afternoons at 4 pm.
 "Wide Wide World" was a documentary series that aired for one hour, and was filmed in different parts of the world.
 This was the only show of its kind at the time.
 His production consisted of "Sunday Driver," "Land of Plenty," "and "Two Ways to Winter."
Darlene Rodriguez (née Pomales) is co-anchor of "Today in New York" on WNBC.
 Rodriguez became co-anchor of the show in July 2003 after serving as a reporter for WNBC and then co-anchor of "Weekend Today in New York".
Savannah Clark Guthrie (born December 27, 1971) is an American journalist and attorney, working for NBC News.
 She has been co-anchor of "The Today Show" since July 2012.
Michael "Mike" Leonard (born November 30, 1947) is a retired American television journalist who formerly worked for The Today Show on NBC.
 Leonard was a feature correspondent for the Today Show for 31 years and is known for his stories on everyday life and the unique creative way he presents his work.
Oz Pearlman is an international mentalist, speaker, magician, and athlete best known for his 3rd Place finish on "America's Got Talent", Season 10 (2015).
 He was a guest on "Late Night with Jimmy Fallon" on April 15, 2010.
 He also made guest appearances on "NBC Today Show" on August 23, 2015, and three times in 2016.
 On January 26, 2017 he appeared on NBC Today Show again and appeared to predict the American Super Bowl result.
 Oz aired on "The Meredith Vieira Show" on December 1, 2015 and February 8, 2016.
 He was a guest on CNBC "Squawk Box" on December 23, 2015.
 Pearlman appeared on The Dr. Oz Show on December 20, 2016.
 He appeared on ABC World News Tonight on July 24, 2009.
 Oz made a guest appearance on CBS’s "Early Show" on May 30, 2009.
 He appeared as a guest at "Wall Street Journal"' s studio on April 7, 2016.
 Pearlman was featured on a commercial for "Mohegan Sun" in China.
 Pearlman was a guest on the national radio show "Elvis Duran and the Morning Show".
 He won the Long Island Marathon in 2015 when he completed the 26-mile marathon in 2 hours, 25 minutes, and 25 seconds.
Joe Beam is an inspirational speaker and best-selling author.
 He founded Family Dynamics Institute in 1994 and served as its president until he founded Love Path International in 2008.
 He has appeared on television and radio programs including The Today Show, The Weekend Today Show, ABC's Good Morning America, Focus on the Family, the Montel Williams Show, and the Mike and Juliet Show.
 Beam has been featured in articles by magazines such as "People" and "Better Homes and Gardens".
 He hosted Give and Take—a national radio show in which he provided advice on relationships ranging from romance to parenting.
 The show went off the air in September 2008 due to production negotiations.
Danny Jelaca is an American stylist.
 He is the founder of the Danny Jelaca Salon in Miami Beach and has worked with celebrities including Jennifer Lopez, Padma Lakshmi, Milla Jovovich, Naomi Campbell, Cameron Diaz, Sharon Stone, Ivana Trump, Savannah Guthrie, and local celebrities such as Real Housewives of Miami's Adriana de Moura.
Carl Quintanilla (born September 10, 1970 in Midland, Michigan, United States) is an American journalist working for "CNBC".
 He is co-anchor and anchor, respectively, of CNBC's morning programs "Squawk on the Street" and "Squawk Alley", both of which broadcast live from the floor of the New York Stock Exchange.
 Previously at CNBC he was anchor of "Squawk Box".
 He has also served as an NBC News correspondent based in New York and Chicago, and has substituted on both the "NBC Nightly News" and the "Today Show".