Dravid's (I'd finish the period at 2006 as it's pretty obvious he's declined considerably immediately after that) was
42.58, Kallis' up to the end of the England Test series was
47.65.
To compare to the others who've made massive runs starting from the exact same time, Ponting's is
71.54, Lara's
59.71, Chanderpaul's
44.74, Hayden's (up to the end of 2007/08 as he's barely scored a run since then)
59.79, and Sehwag's
79.02.
Aggression is not essential. All you need is the ability to bash weak bowling on flat pitches (though that's not to say that ALL the above were ONLY capable of doing that, just that they all were capable of and did do such a thing to a very considerable extent in the time in question).