Year

Lipids

G

Proteins

G

Ashes

G

P₂O₅

G

K₂O

G

CaO

G

MgO

G

1986

46.383

A

26.805

A

2.469

A

0.936

A

1.524

A

0.221

A

0.060

A

1988

48.472

A

34.247

B

2.721

A

1.116

B

1.288

B

0.250

A

0.039

A

1989

44.382

A

34.640

B

2.895

B

1.261

C

0.579

C

0.381

C

0.568

B

1990

49.185

A

31.446

C

2.279

C

0.709

D

0.582

C

0.178

B

0.141

C