ドイツのデータは無いけど大体ざっくり2〜20%だよ
https://ourworldindata.org/grapher/covid-19-tests-cases-scatter-with-comparisons?country=AUS+BHR+BGD+CAN+CRI+SLV+IND+IDN+ISR+JPN+MYS+MEX+PAK+PAN+PHL+KOR+TWN+TUR+GBR+USA