I NEED CONCENTRATION RATIO FOR AUTOMOBILE INDTSRY FOR LAST 10 YEARS ATLEAST.

PLEASE HLEP ME WITH DATA AND RATIO. THIS DATA I HAVE BELOW IF THIS IS NOT SUFFICIENT I WOULD REQUEST YOU HELP ME TO GET DATA AND FIND THE RATIO.

I DONT KNOW HOW MANY FIRMS IN BELOW DATA BUT YOU CAN ASUME AS PER AUTOMOBILE INDUSTRY. AND GIVE ME THE ANSWER FOR CR RATIOS FOR BELOW DATA

US market sales of automobile and I NEED 4 company concentration ratio for BELOW data

Year Profit Sales Year Profit Sales 16.96 2008 3.00 13.25 1999 3.97 17.41 2009 1.15 2000 3.47 10.43 2001 3.78 17.18 2010 3.31 11.59 2002 0.56 16.85 2011 1.66 12.78 2003 0.03 16.68 2012 5.10 14.49 2004 1.25 16.91 2013 4.56 15.58 2005 17.00 2014 3.82 16.53 2006 3.49 16.56 2015 3.16 17.47 2007 2.59 16.15 2016 3.36 17.54