river.json

{
   "years":[
      {
         "year":"1995",
         "grade":"D",
         "perSwim": 23,
         "perBoat": 78
      },
      {
        "year":"1996",
        "grade":"C-",
         "perSwim": 42,
         "perBoat": 77
      },
      {
        "year":"1997",
        "grade":"C",
         "perSwim": 53,
         "perBoat": 83
      },
      {
        "year":"1998",
        "grade":"C+",
         "perSwim": 52,
         "perBoat": 83
      },
      {
        "year":"1999",
        "grade":"B-",
         "perSwim": 48,
         "perBoat": 80
      },
      {
        "year":"2000",
        "grade":"B",
         "perSwim": 47,
         "perBoat": 86
      },
      {
        "year":"2001",
        "grade":"B",
         "perSwim": 59,
         "perBoat": 82
      },
      {
        "year":"2002",
        "grade":"B",
         "perSwim": 34,
         "perBoat": 81
      },
      {
        "year":"2003",
        "grade":"B-",
         "perSwim": 64,
         "perBoat": 91
      },
      {
        "year":"2004",
        "grade":"B+",
         "perSwim": 66,
         "perBoat": 94
      },
      {
        "year":"2005",
        "grade":"B+",
         "perSwim": 52,
         "perBoat": 91
      },
      {
         "year":"2006",
         "grade":"B+",
         "perSwim": 71,
         "perBoat": 95
      },
      {
        "year":"2007",
        "grade":"B++",
         "perSwim": 74,
         "perBoat": 97
      },
      {
        "year":"2008",
        "grade":"B+",
         "perSwim": 58,
         "perBoat": 87
      },
      {
        "year":"2009",
        "grade":"B+",
         "perSwim": 56,
         "perBoat": 93
      },
      {
        "year":"2010",
        "grade":"B+",
         "perSwim": 62,
         "perBoat": 91
      },
      {
        "year":"2011",
        "grade":"B",
         "perSwim": 65,
         "perBoat": 92
      },
      {
        "year":"2012",
        "grade":"B+",
         "perSwim": 71,
         "perBoat": 95
      },
      {
        "year":"2013",
        "grade":"A-",
         "perSwim": 65,
         "perBoat": 96
      },
      {
        "year":"2014",
        "grade":"B+",
         "perSwim": 62,
         "perBoat": 90
      },
      {
        "year":"2015",
        "grade":"B+",
         "perSwim": 67,
         "perBoat": 94
      },
      {
        "year":"2016",
        "grade":"B",
         "perSwim": 52,
         "perBoat": 87
      }
   ]
}