The national debt is of growing concern in the United States. It reached \$1 billion in 1916 during World War I and climbed to \(\$ 278\) billion by the end of World War II. It reached its first trillion on October 1, 1981, and rose to \(\$ 2\) trillion on April 3, 1986. The third trillion milestone was reached on April 4, 1990. However, the magnitude of the national debt became headline news when it reached \(\$ 4\) trillion and became a presidential campaign slogan for Ross Perot in 1992. It passed \(\$ 5\) trillion in 1996 , \(\$ 6\) trillion in 2002, and on January 15,2004 , it reached \(\$ 7\) trillion. We hardly noticed the other milestones:

\(\$ 8\) trillion on October 18, 2005

$9 trillion on March 6, 2006

\(\$ 10\) trillion on October 7, 2008

$11 trillion on March 22, 2009

$12 trillion on November 16, 2009

$13 trillion on June 1, 2010

$14 trillion on January 4, 2011

\(\$ 15\) trillion on November 15, 2011

$16 trillion on September 4, 2012

$17 trillion on October 18, 2013

$18 trillion on November 28, 2014 Represent this information on a line graph.