Average vintage in the cellar here is roughly 2004 (thanks to a lot of backfilling in certain regions - mainly Bordeaux, and buying as much 01 German Riesling as I can get my hands on). Most of my cellar's fairly young, though the average vintage for my Bordeaux - a rapidly growing part of the cellar - is 1989.
Germany's gone down to 'only' 37% of the cellar - might be because Austria's up to 8%. (Of course, if you're Garagiste, you could always bunch the two together and throw Alsace in there, then just call it all old German wine.
Interesting to see how the producer allocations in the cellar have changed too. Reds are heavily Rhone-dominated - Baudry at the top, but followed by Texier, Gonon, Verset and Allemand.
For whites, Donnhoff at the top, followed by Willi Schaefer, Hirtzberger, JJ Prum (I blame Herr Bueker and a recent tasting of some stellar Prums that got me buying again) and Catoir.