Free tier billing for DynamoDB missing transfers?

DynamoDB includes:

25 GB of storage and up to 200 million read/write requests per month with the AWS Free Tier

My monthly billing statement for S3 shows storage and transfers:

• Amazon Simple Storage Service Requests-Tier1
  • $0.00 per request - PUT, COPY, POST, or LIST requests under the monthly global free tier
• Amazon Simple Storage Service Requests-Tier2
  • $0.00 per request - GET and all other requests under the monthly global free tier
• Amazon Simple Storage Service TimedStorage-ByteHrs
  • $0.000 per GB - storage under the monthly global free tier

Which is exactly as expected. But DynamoDB is missing the "monthly global free tier" section:

• Amazon DynamoDB PayPerRequestThroughput
  • $0.25 per million read request units (N. Virginia)
  • $1.25 per million write request units (N. Virginia)
• Amazon DynamoDB TimedStorage-ByteHrs
  • $0.00 per GB-Month of storage for first 25 free GB-Months

and based on this I would expect a monthly bill of $0.01 for my piddly 6,000 read/write requests (out of the 200 million free tier limit). What needs to be done to get the billing page to show "$0.00 per request under the monthly global free tier" for DynamoDB?