Question: Charlie Puth and Shy Carter both released songs they wrote in what same year?
Context: American singer Charlie Puth has released one studio album, three extended plays, one video album, three singles, and three promotional singles. Puth released two extended plays, "The Otto Tunes" (2010) and "Ego" (2013), as an independent artist.  In 2015 he signed with Atlantic Records and released his debut single "Marvin Gaye", which features guest vocals from Meghan Trainor.  The single has been certified 2× Platinum in Australia, topped the charts in New Zealand, Ireland, and the United Kingdom, and peaked at number 21 on the US "Billboard" Hot 100.  Puth wrote, co-produced, and was featured on a song with Wiz Khalifa, "See You Again", included in the "Furious 7" soundtrack.  On May 1, 2015, Puth released an EP, "Some Type of Love".  The pre-order for Puth's debut studio album "Nine Track Mind" started on August 20, 2015 along with the second single "One Call Away".  The album was officially released on January 29, 2016. "Attention" is a song recorded by American singer/songwriter Charlie Puth.  Written and produced by Puth, with additional songwriting by Jacob Kasher, the song was released on April 21, 2017 by Atlantic Records, as the lead single from Puth's upcoming second studio album "Voice Notes".  It is a midtempo pop rock song with elements of '80s soft-soul and funk.  The song's music video was released on April 24, 2017.  The single has since attained top 10 peaks in more than 10 countries, including France, Australia, New Zealand, the United Kingdom, the Philippines, and the United States. "Stuck Like Glue" is a song co-written and recorded by American country music duo Sugarland.  It was released July 26, 2010 as the first single from their album "The Incredible Machine", released October 19, 2010.  "Stuck Like Glue" debuted at number 44 on the U.S. "Billboard" Hot Country Songs chart for the week of August 7, 2010, and debuted at #20 on "Billboard" Hot 100 the following week.  It went on to sell 2,629,000 digital copies by May 2013.  The song was written by Jennifer Nettles, Kristian Bush, Kevin Griffin and Shy Carter. Shy Carter (born August 21, 1984), is an American songwriter, record producer, and singer.  Recently, Shy has written for top acts such as Meghan Trainor, Jason Derulo, Charlie Puth, Faith Hill, Tim McGraw, and Billy Currington.  He co-wrote Charlie Puth's two-time platinum hit "One Call Away" which hit No. 1 on "Billboard"'s Adult Top 40 chart.  In 2009, he co-wrote "Someday" with Rob Thomas, which spent over 40 weeks in the Top 5 and became a No. 1 hit on "Billboard"' s Adult Top 40 chart. " Stuck Like Glue", his collaboration with Sugarland, debuted on the "Billboard" Hot 100 at No. 20 and became the 11th most downloaded country music song of all time.  He has also been featured on Latin artist Gloria Trevi's #1 song "Habla Blah Blah".  He's also worked with Faith Hill, Ashanti, and Chingy.  Carter also wrote a song titled "Bring it Back", which was released on August 7, 2015 and hit the Top 40 of "Billboard"'s Rhythmic chart. Jimmy Paxson is an American drummer.  He has toured, performed and/or recorded with Stevie Nicks, The Dixie Chicks, Lindsey Buckingham, Christine McVie, Beyoncé, Alanis Morissette, Idina Menzel, Ben Harper, Ellen Harper, Charlie Musselwhite, Eikichi Yazawa, Edgar Winter, Ronnie Montrose, Stanley Clarke, Rod Stewart, Joe Sample, Randy Crawford, Robben Ford, Philip Sayce, Waddy Wachtel, Keiko Matsui, Sophie B. Hawkins, Sub.bionic, Lady Antebellum, Don Henley, Steve Vai, Sheryl Crow, Roy Gaines, Rick Derringer, Ravi Coltraine, Jerry Goodman, Dave Stewart, Mike Campbell, Johnny Rivers, A Fine Frenzy, Anna Nalick, Adam Levine, Vanessa Carlton, Lili Haydn, Annie Clark (of St. Vincent), Larkin Poe, Ladies of the Canyon, Abandon Jalopy with Brad Smith of Blind Melon, Shy Carter, Batture Boys with Tommy Malone and Ray Ganucheau, Jenni Alpert, Andra Day, Sunnie Paxson, Cagnet, Barbara Morrison, Bernard Fowler, Julian Coryell, Rachael Spector, Elizavetta, Ray-J.  and Giorgia.  His organ trio "The Casualties of Jazz" (with bassist Chris Golden and Matt Rohde on B3 Hammond Organ) recorded a critically acclaimed record of Black Sabbath songs performed as organ jazz called Kind of Black (2004 Bel Aire Records, produced by J.J. Blair) Charles Otto Puth Jr. ( ) (born December 2, 1991) is an American singer, songwriter and record producer.  He is known for his 2015 song "See You Again", which he wrote, co-produced, and performed with Wiz Khalifa for the "Furious 7" soundtrack as a tribute to Paul Walker. Nine Track Mind is the debut studio album by American singer Charlie Puth.  It was released on January 29, 2016, by Atlantic Records, after being scheduled to be released on November 6, 2015.  Puth has produced throughout the album.  The album peaked at number 6 on the "Billboard" 200, however, it received negative reviews from critics with a score of 37 out of 100 on Metacritic, becoming the fifteenth worst critic-reviewed album on the site. "Marvin Gaye" is the debut single recorded, produced, and co-written by American singer Charlie Puth.  It was released on February 10, 2015 by Atlantic Records as a single from Puth's third EP, "Some Type of Love" as well as the lead single from his debut album, "Nine Track Mind", it features guest vocals by Meghan Trainor.  Puth co-wrote the song with Julie Frost, Jacob Luttrell and Nick Seeley. "See You Again" is a song recorded by American rapper Wiz Khalifa, featuring American singer Charlie Puth.  The track was commissioned for the of the 2015 action film "Furious 7" as a tribute to the late actor Paul Walker, who died in a single-vehicle accident on November 30, 2013 in Valencia, California.  Later on, the song was included as a bonus track on the international release of Puth's debut album, "Nine Track Mind".  The artists co-wrote the song with its co-producers, DJ Frank E and Andrew Cedar, with additional production from Puth and mixing provided by Manny Marroquin.  "See You Again" was released on March 10, 2015, as the soundtrack's lead single in the United States. Julie Frost is an American songwriter, singer, guitar player and music producer.  She is also the founder of the non-profit "Songs For Elephants", with the mission to help mobilize the music and entertainment industry in support of the world's elephants.  She is the second American songwriter to win the Eurovision Song Contest, as co-writer of the song "Satellite", which won the contest for Germany.  Frost wrote the hook for Black Eyed Peas' multi-platinum single "Just Can't Get Enough", the hook for Pitbull's "Castle Made of Sand", and Flo Rida's "Sweet Spot".  She also co-wrote Beyoncé's single "Countdown", Ed Sheeran's "Kiss Me", Marina and the Diamonds's "Primadonna", and Madonna's song "Masterpiece", from the soundtrack of her movie "W.E.", and won a Golden Globe award for best original song in a soundtrack.  Most recently, Frost wrote the end credit song and lead single for the "Endless Love" Soundtrack performed by Tegan and Sara and co-wrote "Lift Me Up" featuring Nico and Vinz and Ladysmith Black Mambazo on Guetta's album "Listen", and co-wrote Charlie Puth's single "Marvin Gaye" with Charlie Puth featuring Meghan Trainor.
Answer: 2015