易Chronology

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500610710800970100010801100120015901600172018001900 510–609620–709720–799860–9691010–10791290–15891670–1719

1

5

1

2

3

1

1

1

1

2

1

2

2

2

1

1

1

1

2

1

1

1

7 +1

7 +1

1

42 +36

11 +5

7 +1

4

7 +1

4

2

8 +2

9 +3

1

1

21 +15

1

6

3

No year recorded 217

+211

Each crop stands at the decade of the first year its book's date gives; a date given only as before a year stands at that year. Dates come from the catalogues and editions cited with each record. The bars draw the whole span and their counts to scale; in the strip below them, fifty years or more with no crop are folded and marked. Japanese dates converted with HuTime ↗