As fares move consistently, award availability moves consistently, and your personal travel needs and wishes are yours alone, it's impossible to give anything more than an indicative value, which others have already done. It's like a country's inflation figure - it's an accumulation of lots of statistics, but your personal inflation figure could be much less or much more depending on your individual purchasing habits. You'll find plenty of threads and advice about maximising value of your miles - generally MFUs, premium cabins and needing flexible tickets - that's what you should really focus on...