SONIA ELKS  MAKING sure all girls are finishing secondary education by 2030 could boost the gross domestic product (GDP) of developing countries by 10% on average over the next decade, according to a report. Every $1 spent on girls' rights and education would generate a $2.80 return - equivalent to billions of dollars in extra GDP, according to the study by rights group Plan International and financial services firm Citi's Global Insights team. "COVID-19 recovery plans that prioritise investment in girls' education and well-being will help communities and economies build back better and stronger," said Anne-Birgitte Albrectsen, chief executive of…