I want to know the answer to the following question:
In what year did Mahbub ul Haq devise and launch the HDI?
All the background I'm provided with is that "These were devised and launched by Pakistani economist Mahbub ul Haq in 1990 and had the explicit purpose "to shift the focus of development economics from national income accounting to people-centered policies".". Is that enough to answer the question?
Answer: yes