Finland Visa exemption

Hello,
 I’m a Finnish citizen and I’m coming to Vietnam for a period of time  Friday 22Dec - Saturday 6Jan. This totals to 15 days. Based on the table you have on your website it says Finland is visa exempt for less than  15 days. Does this mean I have to get a visa? Or am I allowed to be in  Vietnam 15 days without a visa?

 Looking forward to your advice!