In May 2010, more than 120,000 North Koreans owned mobile phones; this number had increased to 301,000 by September 2010, 660,000 by August 2011, and 900,000 by December 2011. Orascom reported 432,000 North Korean subscribers after two years of operation (December 2010), increasing to 809,000 by September 2011, and exceeding one million by February 2012. By April 2013 subscriber numbers neared two million. By 2015 the figure has grown to three million.

Question: Which month in 2010 did less North Koreans own mobile phones, May or September?
Answer: May 2010

Question: How many more mobile phones did North Koreans own in September 2010 compared to May 2010?
Answer: 181000

Question: Which date did more North Koreans own mobile phones, September 2010 or December 2011?
Answer: December 2011

Question: How many more North Koreans owned mobile phones in December 2011 compared to May 2010?
Answer: 780000

Question: What year date Orascom report more subscribers, September 2011 or February 2012?
Answer: February 2012

Question: Which three dates did Orascom report more than one million subscribers?
Answer: February 2012

Question: Which month in 2010 did less North Koreans own mobile phones, May or September?
Answer: May

Question: How many more North Koreans owned mobile phoned in September 2010 compared to May 2010?
Answer: 181000

Question: Which month and year did Orascom have more subscribers, December 2010 or February 2012?
Answer: February 2012

Question: How many more subscribers did Orascom have in February 2012 compared to September 2011?
Answer: 191000

Question: How many months did it take Orascom to gain 191,000 subscribers?
Answer: 5

Question: How many millions of subscribers did Orascom gain between April 2013 and 2015?
Answer: 1

Question: Which year did Orascom have more subscribers, 2013 or 2015?
Answer: 2015