How many total skill points does a character get in Dead Island?

Considering there is no respec mechanism in Dead Island, I'm trying to plan out my character build a little in advance.

In examining the skill tree I see there are:

• 21 possible points in Fury
• 39 possible points in Combat
• 39 possible points in Survival

I am assuming that all characters have the same number of points to put in their tree (I'm currently playing Xian). Judging from the achievements, the current level cap in-game is 60, but I don't know if there may be instances where you level up and get 2 upgrades available or something.

So how many total skill points can a level 60 character have?

Solution 1:

There's no other way of gaining skill points other than leveling up, which only grants one skill point.

So the amount of skill points you would have at level 60 would be 59.