永Chronology

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5005806006707008009001000108011001200141015401600170018001900 520–579620–669750–799840–899910–9991010–10791290–14091420–1539

1

2

2

2

2

1

1

1

1

1

3

2

2

1

1

2

1

1

1

3

1

1

2

1

1

1

1

1

2

1

1

1

2

15 +9

2

3

14 +8

1

1

9 +3

5

8 +2

20 +14

5

2

24 +18

10 +4

8 +2

1

7 +1

4

15 +9

14 +8

8 +2

11 +5

No year recorded 433

+427

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 ↗