Yeah, this has been done before...but not for awhile at least. It's hard to really judge how high stats should be, and worse, you look like your bragging if you make most of them high. Also, judging strength based on size/age and not some universal standard seems strange.
Anyway my stats have changed a bit at this point in my life.
Strength: 13
This used to be higher. I'm a bit over 6 foot and qualified for the special forces when I was in the Air force (at 17). My legs are especially strong, even now...and if I was judging by leg strength alone my stat would be higher. I am 41 now though, and while still quite strong, I don't work out with weights on a regular basis anymore (I do more aerobic/endurance sports etc now). I was never MASSIVE (IE a bodybuilder) but I was quite good at football due to my size and speed.
Dexterity: 15-16
Many different ways to calculate this. I was a natural juggler for instance, but also extremely good at a variety of dexterity based sports. I competed against the US table tennis team for instance. I also took a variety of martial arts for years and of course, have tons of practice playing video games. I taught archery for a few years at summer camp when I was young and am able to write with either hand. In addition (this freaks my wife out), I can perform many actions with my feat that most people can not (I can pick anything up with them for instance lol).
Con: 12
I used to be VERY healthy. I never broke any bones even though I have been run over (and then backup up over) by a car when I was 8, fallen off a 4 story building and participated in tons of sports and dangerous activities when I was younger. I never got sick either (still to this day only have gotten a cold flu like 3-4 times...all since I turned 30 or so). I only say 12 now because A: I can run a mile but i'm certainly not going to compete for best time anymore. B: I have gotten sick a few times now and C: I'm just plain older 41...is 41....I'm not as fit and don't have the endurance I used to. I have not mountain climbed in over 10 years...and I drive everywhere now pretty much.
Int: 17
This is a VERY hard one to judge. I graduated 3 years early from HS (on my 16th birthday). I have a Masters degree with a 3.98 GPA. I generally judge INT more on how fast you can learn, instead of how much you actually know, and in that regard I have not met anyone who can learn as fast as me, or figure things out (especially logic problems etc) as easily. I only know 3 languages though and I didn't continue with education past my Masters....but even so, 17 seems like a good number.
Wis: 15
Ahh, finally something that has gone up as I have aged. Honestly I had a jam packed early life...but even so, the last 14 years or so (I've been married that long), have certainly giving me a few new perspectives on life. I've worked many jobs, been in the Air Force, Run a company, worked with my wife on death penalty defense, family law etc. I have met many different types of people, arbitrated many disputes and even taught at schools. All of those things add up to a wealth of knowledge and experience dealing with people and situations.
Cha: 11
This used to be higher as well. It's dropped not because I can't be charismatic if I want, but because in generally I don't bother anymore. When younger I had a large group of friends, with a smaller core group inside. I was often the life of the party and very social. I retained some of that for the first few years after getting married but eventually me and my wife have settled down and hardly ever have friends over anymore. I stopped most of my social activities a few years ago. I think a large part of charisma is.....wanting to be charismatic. If your not putting the effort out there, then your score won't be that high. I did work in sales for a few years, was a manage, a teacher and many other jobs that involved selling yourself or other items (and I was quite successful). This number should probably be higher but I'm trying to be as honest as possible.
When young I used to practice what is called Parkour or free running. That is how I ended up falling off a 4th story building once lol. This was in the late 80's early 90's. I could scale walls like a spider (using arms as legs to push against 2 walls and climb up, or using ridges etc) and would jump from rooftop to rooftop. I was bored out of my mind by school. They had advanced classes etc, but we moved around too much for me to graduate any earlier then I did (I actually started school 1 year late...so actually attended school 4 years less then everyone else). I have climbed many mountains, loved white water rafting and excelled at football, basketball and tennis for years, along with a variety of martial arts (focus mainly on Judo eventually though).
Professionally I have been a teacher, a manager, a legal partner and worked in sales. I have created video games (and played a ton of them) starting off waaaay back on the APPLE II with basic, and continuing on until a few years ago in C+ and Java (I really don't like Java though). I've written many guides over the years and a few other small stories/books in real life.
I'm married with no children, quite a few friends and pretty lucky over all (luck isn't a stat...but if it was...I'd have a great luck).