Between 2008-2011 he was fine. He totally fooled me that's for sure, when I became a fan back in 2011 I remember watching live shows on YT such as MSG 2008, Bucharest 2011, O2 2010, Hyde Park 2011 etc. and I really couldn't tell the difference between the studio version of the songs and the live ones.

That changed pretty quickly as I slowly moved away from watching live shows for a few weeks/months and then when I came back to watching recent live shows I was like WHAT THE F@@K?! Is this the same person?

We all know that his voice went donwhill very fast in 2002-2003 and he sounded like crap compared to 2000 2001 and unfortunately he has never fully recovered ever since.

One thing is for sure. His voice is getting deeper and deeper as he ages, you can clearly tell comparing an interview with him from 1990 with one from 2011 for example. It's pretty obvious that his speaking voice has gotten deeper which makes me think that this also affected his range so he tries to compensate by singing through his nose a lot.