Study Figure 1, which shows the employment structures for Germany, Turkey, and Vietnam in 2000 and 2020.

Identify which one of the following statements is correct.
Germany's employment in the secondary sector has decreased by 15 percentage points.
Turkey's employment in the primary sector has increased by 18 percentage points.
Vietnam's employment in the tertiary sector has increased by 12 percentage points.
Vietnam's employment in the primary sector has decreased by 12 percentage points.