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  "documentTitle": "US Mail Volumes to 2020",
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  "notes": "The chart shows a starting volume of 14.4B in 2009 and an ending volume of 11.0B in 2020, with various positive and negative drivers in between.",
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      "text": "B2C mail volume: 24%",
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      "kind": "source-note",
      "text": "Source: BCG analysis, customer interviews, USPS RPW Report, USPS Household Diary Survey, USPS volume tracking data",
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