Fixed the problem by starting the category axis from year 2000 and then adding 1. In amchart changed the setting to display the last two characters of year
var catAxes = new AmCharts.CategoryAxesSettings();
catAxes.dateFormats = [{ period: 'fff', format: 'JJ:NN:SS' }, { period: 'ss', format: 'JJ:NN:SS' }, { period: 'mm', format: 'JJ:NN' }, { period: 'hh', format: 'JJ:NN' }, { period: 'DD', format: 'DD' }, { period: 'WW', format: 'MMM DD' }, { period: 'MM', format: 'YY' }, { period: 'YYYY', format: 'YY'}];
chart.categoryAxesSettings = catAxes;