A warehouse manager for a tapware company is keeping track of stock movements and is interested in the probability of selling their 'Rainmaker' range of taps. She creates the following probability distribution of units sold.

Units Sold (x)	Probability P(x)
0	0.1
1	0.32
2	0.26
3	0.22
4	0.1

What is the probability that more than 3 units are sold? Give you answer to 1 decimal place (x.x).