It seems I'm getting old, but you can watch it happen:
2007 - https://www.cdc.gov/injury/wisqars/pdf/unintentional_2007_bw...
2008 - https://www.cdc.gov/injury/wisqars/pdf/leading_causes_injury...
2009 - https://www.cdc.gov/injury/wisqars/pdf/leading_causes_injury...
2010 - https://www.cdc.gov/injury/wisqars/pdf/10lcid_unintentional_...
2011 - https://www.cdc.gov/injury/wisqars/pdf/leading_causes_of_inj...
All Data - https://www.cdc.gov/injury/wisqars/LeadingCauses.html
10 Leading Causes of Injury Deaths by Age Group HighlightingUnintentional Injury Deaths, United States – 2011