Question: What was the 2010 population of the Hawaiian city in which former President Barack Obama spent his Christmas vacations from 2008 to 2016?

Context paragraphs:
Rosa's Law: Rosa's Law (Pub.  L. 111-256) is a United States law which replaces several instances of "mental retardation" in law with "intellectual disability".  The bill was introduced as S.2781 in the United States Senate on November 17, 2009, by Barbara Mikulski (D-MD).  It passed the Senate unanimously on August 5, 2010, then the House of Representatives on September 22, and was signed into law by President Barack Obama on October 5.  The law is named for Rosa Marcellino, a girl with Down Syndrome who was nine years old when it became law, and who, according to President Barack Obama, "worked with her parents and her siblings to have the words 'mentally retarded' officially removed from the health and education code in her home state of Maryland."

Kailua, Honolulu County, Hawaii: Kailua is a census-designated place (CDP) in Honolulu County, Hawaii, United States.  It lies in the Koʻ olaupoko District of the island of Oʻ ahu on the windward coast at Kailua Bay.  It is in the judicial district and the ahupua'a named Ko'olaupoko.  It is 12 mi northeast of Honolulu – over Nu‘uanu Pali.  The population was 38,635 at the 2010 census.

Zeituni Onyango: Zeituni Onyango ( ; May 29, 1952 – April 7, 2014) was known as the half-aunt of United States President Barack Obama; she was born into the Luo tribe in Kenya.  Born during the British rule of the Protectorate of Kenya, Onyango was the half-sister of Barack Obama, Sr., father to the president.  The younger Obama refers to her as "Aunti Zeituni" in his 1995 memoir, "Dreams from My Father".  In 2002 she had applied for political asylum in the United States but was denied.  She became notable when her case was leaked in the final days of the 2008 U.S. presidential campaign in which Barack Obama was the Democratic candidate, attracting international media attention.

Timeline of the presidency of Barack Obama: Barack Obama was elected President of the United States on November 4, 2008 and his first inauguration occurred on January 20, 2009.  Re-elected on November 6, 2012, his second inauguration was on January 21, 2013.  For President Obama's first 100 days in office, see First 100 days of Barack Obama's presidency.  For his time as President-elect, see Presidential transition of Barack Obama.  The following articles cover the timeline of the presidency of Barack Obama:

Shefali Razdan Duggal: Shefali Razdan Duggal (born November 22, 1971) is an Indian-born American Democratic political activist in San Francisco who is a Presidential Appointee to President Barack Obama to the United States Holocaust Memorial Council, which supervises the United States Holocaust Memorial Museum, for a term expiring in January 2018.  She was an active fundraiser for the Barack Obama election campaign in 2008 where she was a Trustee for the DNC South Asian American Leadership Council.  She focused on South Asian and Young Professional outreach, co-hosting a number of fundraising events for both the Senator and his surrogates.  She was a member of President Barack Obama's National Finance Committee for his reelection campaign in 2012, a co-chair for Obama Victory Trustees, and the Northern California Finance Committee.  She worked on the Massachusetts Democratic Party, New Hampshire Democratic Party, and Senators Ted Kennedy and Dianne Feinstein.  She also worked on the Al Gore presidential campaign in 2000, and Hillary Clinton’s presidential campaign in 2008.

Barack Obama: Der schwarze Kennedy: Barack Obama – Der schwarze Kennedy (English: Barack Obama – The black Kennedy ) is a best-selling German-language biography of President of the United States Barack Obama by journalist Christoph von Marschall.  The book was written by Marschall while he spent much of 2007 travelling with Obama's presidential campaign as a reporter for the Berlin newspaper "Der Tagesspiegel".  It covers Obama’s life from his childhood, through his college years, his time as a community organizer in Chicago, Illinois, and his political career including his 2008 presidential campaign.  Marschall sums up his impressions of Obama by saying, “Seine Lebensgeschichte steht für den amerikanischen Traum.”  (“His life story stands for the American Dream.”)

Arun Chaudhary: Arun Chaudhary is an American political operative and filmmaker.  After serving on President Barack Obama's presidential 2008 campaign, he was asked to become the first official videographer of the White House, a position he held from 2009-2011.  He left in August 2011 to join mobile-messaging startup Revolution Messaging as senior vice president of communications.  He is one of the most influential characters in modern politics, having previously served as New Media Road Director for President Barack Obama's 2008 presidential campaign and as Creative Director for Senator Bernie Sanders's 2016 presidential campaign.

Juan Verde: Juan Verde Suárez (born July 7, 1971) is a business and social entrepreneur who worked on the political campaigns of Senator Ted Kennedy, President Bill Clinton, Vice President Al Gore, Senator John Kerry, and Secretary of State Hillary Clinton, besides serving as International Co-Chair for the reelection campaign of President Barack Obama in 2012.  In addition to developing and directing a strategy designed to mobilize millions of American citizens residing outside of the United States, Mr. Verde serves as an advisor to President Obama on international trade, the Hispanic vote as well as sustainability related issues.  Mr. Verde was appointed by President Barack Obama as Deputy Assistant Secretary for Europe and Eurasia at the US Department of Commerce where he served until 2011.

Eric Schultz: Eric Schultz is a senior advisor to former President Barack Obama and is the founder of Schultz Group.  Schultz is a former White House Principal Deputy Press Secretary and special assistant to President Obama.  Recognized by "Politico" as the strategist “White House officials turn to in a crisis to handle communications,” Schultz was originally hired at the White House in 2011 to respond to Congressional oversight investigations.  After White House Deputy Press Secretary Josh Earnest replaced Jay Carney to become White House Press Secretary, Schultz was appointed White House Deputy Press Secretary.  In this role, Schultz often diffuses "tensions with humor.  But he can be relentless in pushing his message in both public and private conversations.”  Former White House Communications Director Jen Psaki compared Schultz to fictional crisis manager Olivia Pope, "he's the person you want next to you in a foxhole when there's a crisis."  At the end of President Obama's second term, former White House Senior Advisor Valerie Jarrett said of Schultz, “We’ve all grown to rely on his wise counsel" and that the President "trusts his sound judgement."

Plantation Estate: Plantation Estate is a single-story, wood-frame, 5000 ft2 Pacific Ocean-front house at 57 Kailuana Place in Kailua, Honolulu County, Hawaii, which former President Barack Obama rented for use during his Christmas vacations from 2008 to 2016.

Supporting paragraphs: Plantation Estate Kailua, Honolulu County, Hawaii
Answer: 38,635