ምክንያቱም በ 2021 እና በ 2020 በወርሃዊ ውጤቶች መካከል ማወዳደር በ COVID-19 ልዩ ተፅእኖ የተዛባ ነው ፣ ካልሆነ በስተቀር ሁሉም ንፅፅሮች መደበኛውን የፍላጎት ዘይቤ ተከትሎ ወደ ሐምሌ 2019 ካልሆነ።
Because comparisons between 2021 and 2020 monthly results are distorted by the extraordinary impact of Covid-19, unless otherwise noted all comparisons to follow are to March 2019 which followed a normal demand pattern.