Car Repairs by Mile and Year

The month of September was a frustrating one with regard to my car--I found myself in the shop three times for three unrelated things. I hadn't had to make many major repairs on it since purchasing it back near the end of 2005. Or at least, that's how it seemed. So I decided to go back and check my records. Here is a chart showing how many major repairs (anything that isn't routine maintenance like tire rotations, oil changes, or new air filters) I've had to make since I purchased the car:
I suppose that 2008 through 2010 in part have spoiled me, with so few necessary fixes.

I'm just now getting to 100,000 miles. Perhaps, that has something to do with the sudden uptick in problems, though my model is one that typically lasts well beyond the 100,000 mark in others' experience. Here's the mileage at which I had to make major repairs since 2005:

It looks like I was doing really well for about 20,000 miles, but there's been a noticeable uptick in repairs in the last 10,000. It was a very trying September through November this year (ironically, the last mechanic who worked on my car said I'd done a really good job of maintaining it--well, yes, indeed, I have, but that doesn't seemed to have helped this past year).