JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://rawgit.com/masayuki0812/c3/master/c3.js"></script>
<link rel="stylesheet" href="https://rawgit.com/masayuki0812/c3/master/c3.css">
<div id="chart"></div>

JavaScript

var chart = c3.generate({
        bindto: '#chart',
        data: {
          x : 'x',
          columns: [
            ['x', 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017],
            ['open cases', 0, 7, 10, 12, 14, 19, 12, 17, 19, 18, 23, 24, 33, 42, 54, 63, 52, 51],
            ['total budget', 0, 1359300, 1700900, 2248200, 2417400, 2966846, 2966846, 2658700, 3009082, 3919996, 4212200, 4319972, 4882937, 5026751, 5671243, 5059538, 5896239, 6289674]
          ],
          axes: {
            'total budget': 'y2'
          },
          types: {
            'open cases': 'bar' // ADD
          }
        },
        axis: {
          y: {
            label: {
              text: 'open cases',
              position: 'outer-middle'
            }
          },
          y2: {
            show: true,
            label: {
              text: 'total budget',
              position: 'outer-middle'
            }
          }
        },
                    x: {
                type: 'timeseries',
                tick: {
                    values: [2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017]
                },
            }

    });