Effect

Sum of squares

Degree of freedom

Variance

Variance error

F-value

P-value

Year

132.72

5

26.45

29.98

0.88

0.53

Population

4.25

2

2.12

29.98

0.07

0.93

Year × population

269.90

9

29.98

27.95

1.07

0.40