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I believe that the form with this issue is the following one: http://www.jotform.us/form/23138880132147
The reason for this is because you are using Birth Day Picker widget. As such it will not show the years that will come to be, just the current one and before.
If you are using the same widget to accept other dates as well, you can then set the widget to show the future years as well.
You do that by setting the Year From and Year To parameters.
Once you set both you should be able to see 2016.
For example, you can set Year From to be 1920 (or as early as the oldest person can be registered on your form) and then set the Year To to 2016.
The downside of doing this this way (not leaving it on automated value, but setting the value manually) is that you will need to update this next year as it will not update on its own.