How much percentage of the minor signs of the Last Hour has been fulfilled?

In order to prepare ourselves before meeting with Al-Mahdi (The Guided One) and fighting against Al-Masih Ad-Dajjal (The Impostor Christ), we have to be able to estimate the arriaval of them. One way to estimate their arrival is to look at the fulfillment of the minor signs of the Last Hour because if all of the minor signs have been fulfilled (excl. arrival of Al-Mahdi) then Muslims are supposed to be strong enough to unite and stand alongside Al-Mahdi to fight against Ad-Dajjal and his minions. So how much percentage of the minor signs has been fulfilled (estimation is OK)?