Via the Demographics of Japan by way of Wikipedia:

• 2019 = 126,555,000
• 2020 = 126,146,099 (−408,901)
• 2021 = 125,502,000 (−644,099)
• 2022 = 124,947,000 (−555,000)
• 2023 = 124,352,000 (−595,000)
• 2024 = 123,802,000 (−550,000)

Bullet list shows total population is each of the last six years followed by absolute numeric decline in population in brackets.

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