Hello Tun Lu,
Thank you for your email and your interest in our services. Tickets for 2016 are not available yet for anyone, that is why they don't appear on the availability calendar. By the end of December is usually when the government opens purchases for the next year, even for February.
You can subscribe to receive the availability when purchases for 2016 are open: http://www.ticket-machupicchu.com/dispo/index.php?lg=en
Best regards,
