Passage: Limbaugh holds an annual fundraising telethon called the "EIB Cure-a-Thon" for the Leukemia & Lymphoma Society. In 2006, the EIB Cure-a-Thon conducted its 16th annual telethon, raising $1.7 million, totaling over $15 million since the first cure-a-thon. According to Leukemia and Lymphoma Society annual reports, Limbaugh personally contributed between $100,000 and $499,999 from 2000–2005 and 2007, and Limbaugh said that he contributed around $250,000 in 2003, 2004 and 2005. NewsMax reported Limbaugh donated $250,000 in 2006, and the Societys 2006 annual report placed him in the $500,000 to $999,999 category. Limbaugh donated $320,000 during the 2007 Cure-a-Thon, which the Leukemia and Lymphoma Society reported had raised $3.1 million. On his radio program April 18, 2008, Limbaugh pledged $400,000 to the Leukemia and Lymphoma Society after being challenged by two listeners to increase his initial pledge of $300,000.
Did Limbaugh donate more in 2006 or 2007? How many dollars did Limbaugh increase  his pledge by after being challenged by listeners? How many more dollars did Limbaugh donate in 2007 than he did in 2006? How many more millions of dollars did the telethon raise in 2007 than it did in 2006? How many more thousands of dollars did Limbaugh contribute to the Cure-a-Thon in 2007 than in 2003? How many more thousands of dollars did Limbaugh pledge to donate to the Leukemia and Lymphoma Society after being challenged by 2 listeners? How many years did Limbaugh donate $250,000?