I voted for 50% of the time. However, that's while I'm coding something in a language that I've used for over a decade. The brain can only hold so much, and as you get older, it will always seem to be filled to the brim. That's what search engines are for... reference, verification and discovery.
Right now, learning Go - which is officially the first programming language I've decided to deep dive into without fully ever coding in C or Java or a language you'd need to compile - I'd say I'm around 15%-25%, at this point. Completely self-taught in every skill set and never going to college, sometimes it feels like I'm storming the beach at Normandy without a firearm.
Programming, in general, is invigorating, confusing and disappointing - all at once. With new things popping up to accommodate the hyper-acceleration of technology (Moore's Law), it seems impossible if you don't force yourself to focus on something for a few years without getting sidetracked.

I also feel that anyone who claims "All the time..." (unless they were just kidding around) is quite possibly the most egotistical fool you'd ever have the displeasure meeting.
75% is pushing it, as well, however, some of us just grind - and, as someone who teaches private classes - I can honestly say I can meet that level once focused and uninterrupted. I'm extremely self-defamating though, and would rather force myself to evolve within my skill sets than to make an assumption that I'm wonderful at them. lol