The first sentence is true for Cambridge IELTS book. I don't understand why.
By 2007, UK household wealth had risen from €3500 billion to just to just under €7000 billion. In 2007, UK household wealth rose from €3500 billion to just to just under €7000 billion. The difference is the preposition used with the year.
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The difference is the preposition used with the year. Both sentences are grammatically