Slow urine flow

I am a male, 60 years of age and my urine flow has always been fairly fast but over the last few months it has slowed down and the bladder takes a little longer to empty. There is no pain, no feeling that I have not finished urinating, no discharge and generally none of the symptoms associated with prostate cancer. I have generally got up in the middle of the night to go to the toilet and continue to do so. I drink reasonable amounts of water. I just wonder if there is anything in all of this I need to worry about and what I could do to rectify the situation.

 Thanks