I'm not sure whether this has been posted before although it's been quite interesting sifting through some of the results here. Perhaps the biggest surprise was how badly the Canon 7D seems to have done. Only marginally better than the D60?
CAMERA RANKINGS TABLE HERE

mera rankings
Listed below are the DxOMark Sensor scale results for all the digital camera bodies that we have currently evaluated, along with their key specifications. The list is ranked from highest to lowest (left to right, top to bottom) on the DxOMark Sensor scale. The results for all the constituent metrics of the DxOMark Sensor scale are also shown. You can filter the ranked list by brand, resolution, sensor size, date, and price categories.
Just click on any product sheet to view all the measurements used to determine the camera ranking on DxOMark Sensor scale.
All data have been measured at DxO Labs using our Image Quality Evaluation tool, DxO Analyzer. To find out more about all the image quality measurement definition and a description of the testing protocols, click here
Essentials about the DxOMark Sensor scale:
1. DxOMark Sensor measures only the RAW image quality of a digital camera; therefore, DxOMark Sensor is NOT an evaluation of overall camera image quality or performance.
2. DxO Mark Sensor is a logarithmic scale in which a 5-point increase corresponds to a sensitivity gain of 1/3 of a stop.
3. Resolution is NOT factored into the DxOMark Sensor ranking.
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CAMERA RANKINGS TABLE HERE