Need help plotting a timeseries that only shows the year


I am plotting 10 year time series of some chemical components in ambient particulate matter. How do I get the major ticks on the x axis to only show each year? Right now, the major ticks on the x axis show the full date. For example, one of the ticks shows "01 Jan 2012" but I only want it to show "2012". Thanks!

Current figure


ModifyGraph dateInfo(bottom)={0,0,-1},dateFormat(bottom)={Default,2,1,1,2,"Year",-6}

You can access this via Modify Axis... Ticks and Grids... Date/Time Tick Labels -> Date Format -> Other... Use Custom Format...

Hope this helps.