What's the highest division number through the years?
{'header': ['Year', 'Division', 'League', 'Regular Season', 'Playoffs', 'Open Cup'], 'page_title': 'Fort Wayne Fever', 'section_title': 'Year-by-year', 'caption': 'Year-by-year', 'rows': [['2003', '4', 'USL PDL', '3rd, Great Lakes', 'Did not qualify', 'Did not qualify'], ['2004', '4', 'USL PDL', '2nd, Great Lakes', 'Conference Semifinals', 'Did not qualify'], ['2005', '4', 'USL PDL', '4th, Great Lakes', 'Did not qualify', 'Did not qualify'], ['2006', '4', 'USL PDL', '6th, Great Lakes', 'Did not qualify', 'Did not qualify'], ['2007', '4', 'USL PDL', '7th, Great Lakes', 'Did not qualify', 'Did not qualify'], ['2008', '4', 'USL PDL', '4th, Midwest', 'Did not qualify', 'Did not qualify']]}