Question: What was the population in 2000 of the community where Allegiant Travel Company has its headquarters ?

Context paragraphs:
Maurice J. Gallagher, Jr.: Maurice J. Gallagher Jr., also known as Maury Gallagher, is a commercial airline entrepreneur who has been associated with the startup and operation of three airlines, WestAir, ValuJet and Allegiant Air (subsidiary of Allegiant Travel Company), as well as several other non-aviation businesses in the telecommunications and adaptive learning fields.

Trailfinders: Trailfinders is a travel company in the United Kingdom and Ireland and is notable for being the largest independently owned travel company in the United Kingdom.  Trailfinders has 29 travel centres in the UK and three in Ireland.  The company specialises in tailormade travel worldwide.

Chugai Travel: Chugai Travel Co., Ltd. (中外旅行社 , Chugai Ryokousha ) is a travel agency based in Taitō, Tokyo, Japan.  It is a Zainichi Korean Chongryon-affiliated company that caters international travels and especially international travels to North Korea.  Its current CEO is Han Jeong-chi (한정치, 韓正治).  It also has package deals for people with Japanese passports to tour North Korea.  Although the package deals for groups were discontinued under the guidance of JATA (Japan Association of Travel Agents).  Chugai Travel functions as the Japanese branch office of Air Koryo and the Korea International Travel Company.

EDreams ODIGEO: eDreams ODIGEO is a global online travel company that was formed in 2011 with the merger of four online travel agencies including eDreams, GO Voyages, Opodo Travellink plus the metasearch engine Liligo.com, which was acquired in 2013.  The five brands that make up the group sell flights, hotels, vacation packages (flight + hotel), train tickets, car rentals, and travel insurance to 16 million customers with localized sites across 44 countries worldwide.  The company's headquarters are in Barcelona with 15 offices and more than 1,700 employees worldwide.

Allegiant Air: Allegiant Air is an American low-cost airline that operates scheduled and charter flights.  It is wholly owned by Allegiant Travel Company (NASDAQ: ALGT ), a publicly traded company with 3,700 employees and over $2.6 billion USD market capitalization.  The corporate headquarters are in Summerlin, Nevada, a suburb of Las Vegas.

Skyscanner: Skyscanner is a travel fare aggregator website and travel metasearch engine.  The website is owned by Ctrip since November 2016, the largest travel company in China.  The site is available in over 30 languages and is used by 60 million people per month.  The news section of the website includes regular news from the travel and flight industry and travel tips for customers.  The website is the winner of many awards.

Tourism in North Korea: Tourism in North Korea is organized by one of several state-owned tourism bureaus, including Korea International Travel Company (KITC), Korean International Sports Travel Company (KISTC), Korean International Taekwondo Tourism Company (KITTC) and Korean International Youth Travel Company (KIYTC).  Tourism in North Korea is highly controlled by the government, and only about 4,000 to 6,000 Western tourists visit North Korea each year.

MakeMyTrip: Makemytrip Inc. is an Indian online travel company founded in 2000.  Headquartered in Gurugram, Haryana, the company provides online travel services including flight tickets, domestic and international holiday packages, hotel reservations, rail and bus tickets, etc.  The company has been recognized as one of India's best travel portals.  The company also operates through 65 retail stores across 50 cities in India, along with offices in New York City and Sydney.  Makemytrip holds close to 25% market share of the OTA hotel booking segment.

Walt Disney Travel Company: The Walt Disney Travel Company is also the company name for the services The Walt Disney Company employ to help guests book tickets and reservations for the Walt Disney Parks and Resorts around the world.  Travel agencies currently book their vacation packages through the Walt Disney Travel Company.

Summerlin, Nevada: Summerlin is an affluent planned community in the Las Vegas Valley of Nevada.  It lies at the edge of the Spring Mountains and Red Rock Canyon, on the western periphery of Las Vegas, Nevada in unincorporated Clark County.  The community occupies 22,500 acres and includes a variety of land uses, including: residential, commercial, recreational, educational, medical, open space, and cultural.  At the 2010 census, Summerlin's population was nearly 100,000, having risen from 59,000 in 2000.

Supporting paragraphs: Allegiant Air Summerlin, Nevada
Answer: 59,000