The table below shows economic activity for people with health conditions. Basic Economic Activity (Ages 16 ) Health ConditionIn EmploymentUnemployedInactiveTotal Arms, hands172,56812,234280,801465,603 Legs or feet431,50123,393541,427996,321 Back or neck411,02323,774419,782854,579 Difficulty in seeing52,6813,73593,670150,086 Difficulty in hearing72,5473,51786,331162,395 Speech impediment2,516 1,8708,530 Skin conditions, allergies124,07410,56141,689176,324 Chest, breathing problems564,06947,086463,7841,074,939 Heart, blood pressure, circulation717,11329,870876,7881,623,771 Stomach, liver, kidney, digestion275,60013,843222,675512,118 Diabetes416,56516,356392,145825,066 Depression369,48063,044265,585698,109 Epilepsy41,3945,08246,86093,336 Learning difficulties46,39814,365108,910169,673 Mental illness78,44326,215211,455316,113 Progressive illness n.e.c136,2885,908417,318559,514 Other problems, disabilities339,55220,661356,962717,175 Total4,251,812323,7884,828,0529,403,652 Which of these health conditions has the greatest proportion of people employed?