Question: When did the venue of the The 29th Annual Kids' Choice Awards first open?

Context paragraphs:
2012 Kids' Choice Awards: Nickelodeon's 25th Annual Kids' Choice Awards were held on March 31, 2012 at 8 p.m. ET in Los Angeles, California in the United States, where the winners received an orange-colored blimp trophy.  Big Help Award winner Taylor Swift received a special silver-colored blimp from First Lady Michelle Obama.  The complete list of nominees for the 2012 Kids' Choice Awards was released on January 11, 2012, leading up to the release of "Men in Black 3" on May 25, 2012.  The event was hosted by "MIB 3 star" Will Smith, who with ten KCA blimps has won the most awards in previous telecasts.  A record-breaking 223 million votes for favorites in 20 categories were cast during this year's voting period, up 11% over last year's votes.

2005 Kids' Choice Awards: The Nickelodeon Kids' Choice Awards 2005 was the 18th annual Kids' Choice Awards.  The event was hosted by Ben Stiller on April 2, 2005 at 8-9:30 p.m. ET.  and was held at Pauley Pavilion in Los Angeles.

2014 Kids' Choice Awards: Nickelodeon's 27th Annual Kids' Choice Awards was held on March 29, 2014, at the Galen Center in Los Angeles, California.  Actor Mark Wahlberg hosted the ceremony.  The "Orange Carpet" was set up in front of Galen Center on the sidewalks of Jefferson Boulevard.  The show was broadcast on Nickelodeon from 8 p.m. to 9:36 p.m. ET/PT and tape delayed for the West Coast in the United States and Canada, along with the rest of Nickelodeon's international channels, some of which contributed locally based awards and local segments tying into the American broadcast.  Voting was available worldwide on seventeen voting websites in various nations and regions, along with mobile voting depending on region.  The "Kids’ Choice Awards Orange Carpet pre-show" was webcast prior to the presentation of the awards.

2010 Kids' Choice Awards: Nickelodeon's 23rd Annual Kids' Choice Awards (Nickelodeon Kids' Choice Awards 2010) were held on March 27, 2010 (aired live from 8-9:30 p.m. ET) on the Nell and John Wooden Court of Pauley Pavilion, on the campus of UCLA in Los Angeles, California.  With the launch of Nickelodeon Canada in late 2009, Canada broadcast the awards live as it aired in the Eastern, Central, and Mountain time zones of the United States (it was tape-delayed for the Pacific Time Zone) and the awards will be rebroadcast on YTV on April 2, 2010 at 7 p.m. ET.  As a result, Canadian kids were able to vote on candidates for the first time.  Nickelodeon's sister channels TeenNick and Nicktoons suspended regular programming during the 90-minute duration of the award show to allow viewers to see the awards.  The 2010 awards were hosted by Kevin James, who is a first-time "Kids' Choice" host.

The Forum (Inglewood, California): The Forum is a multi-purpose indoor arena in Inglewood, California, adjacent to Los Angeles.  Located between West Manchester Boulevard, across Pincay Drive and Kareem Court, it is north of the under-construction Los Angeles Stadium at Hollywood Park and the new Hollywood Park Casino.  It is about three miles east of Los Angeles International Airport.  Opening on December 30, 1967, the Forum was an unusual and groundbreaking structure.  Architect Charles Luckman's vision was brought to life by engineers Carl Johnson and Svend Nielsen, who were able to engineer the structure so that it had no major support pillars.  This had previously been unheard of in an indoor arena the size of the Forum.

2009 Kids' Choice Awards: Nickelodeon's 22nd Annual Kids' Choice Awards (Nickelodeon Kids' Choice Awards 2009) were held on March 28, 2009 at 8 p.m. on the Nell and John Wooden Court of Pauley Pavilion.  Dwayne Johnson hosted this awards show which lasted for more than one and half hours.  Voting commenced on March 2, 2009.  Performers and presenters have been listed at the official site.  The Jonas Brothers sang their song, "Lovebug", but changed the line "catch this lovebug again" to "catch this slime time again".  By the end of the program, they were named the "slime gods".  This year marks the last time that the Nickelodeon Orange Blimp was used on the Kids' Choice Awards logo for 4 years.  The Nickelodeon Blimp was not used on the Kids' Choice Awards logo again until 2013.

2003 Kids' Choice Awards: The Nickelodeon Kids Choice Awards 2003 was held on April 12, 2003.  It was the 16th annual Kids' Choice Awards ("KCA").  It was hosted by Rosie O'Donnell.  The award show was held in the Barker Hangar at the Santa Monica Airport in Santa Monica, California.  This was the last time O'Donnell would host the awards.  By that time she has hosted the awards seven times in a row.  The announcers were Daran Norris and Susanne Blakeslee from "The Fairly OddParents" who used their Cosmo and Wanda voices, respectively, for the event.

2011 Kids' Choice Awards: Nickelodeon's 24th Annual Kids' Choice Awards were held on April 2, 2011, at 8 p.m. ET at the Galen Center at the University of Southern California in Los Angeles, California, US's University Park neighborhood due to renovations disallowing use of traditional venue Pauley Pavilion until at least 2013.  Jack Black returned as host for the third time since 2006.  The 2011 telecast was the first Kids' Choice Awards to take place in the month of April since 2006, as the previous four Kids' Choice telecasts from 2007 to 2010 were held on the last Saturday in March.  Nominees were announced on February 10, 2011, for twenty categories.  During the show, the Big Green Help Award was presented to Justin Timberlake, an honor given each year.  More than 200 million record-breaking votes were cast for this year's 20-category awards.

2000 Kids' Choice Awards: The 13th Annual Kids' Choice Awards Nickelodeon Kids' Choice Awards originated from the Hollywood Bowl in Los Angeles, live on Nickelodeon on Saturday, April 15, 2000 at 8:00 p.m. Eastern.  LL Cool J, David Arquette, Rosie O'Donnell, Mandy Moore and Frankie Muniz were the hosts.  15 million youngsters participated in the voting, and for the first time, ten categories were exclusive to on-line voters.  Will Smith was a top nominee and took home three orange Blimp Awards for Favorite Male Singer, Favorite Song and Favorite Song From A Movie for his work on "Wild Wild West".  Will's son Trey accompanies him on stage to accept one of the awards.  17,000 youngsters attended the event.  Additionally, Will Smith received Nickelodeon's highest honor of the day, a sliming.

2016 Kids' Choice Awards: The 29th Annual Kids' Choice Awards was held live on March 12, 2016, at The Forum in Inglewood, California live on Nickelodeon and either live or on tape delay across all of Nickelodeon's international networks and also served as a full-length TV movie.  Country singer Blake Shelton hosted the ceremony.  A simulcast was also carried in the United States on sister channels Nicktoons, TeenNick, TV Land, and CMT, as well as on Nick Radio, to maximize ratings numbers, the show drew 3,321,000 on Nickelodeon and 4.426 million on all the channels put together.

Supporting paragraphs: 2016 Kids' Choice Awards The Forum (Inglewood, California)
Answer: December 30, 1967