January

February

March

April

May

June

July

August

September

October

November

December

0.080472

0.235077

−0.04275

0.036025

0.026713

−0.2912

−0.1316

−0.17093

0.193345

0.035231

0.272573

−0.1415

−0.26511

−0.06346

−0.119

−0.24857

−0.16902

0.026791

0.13152

0.100537

−0.12676

−0.22733

−0.12313

0.118135