Given the task definition and input, reply with output. This task involves creating questions from a given passage that involve some kind of complex reasoning (including numerical reasoning).
The generated questions must require looking at more than one part of the passage to answer. Try to use a variety of reasoning types in your questions (some of the sample reasoning types are illustrated in the 'positive examples' field) and also have a variety of answer types (spans, numbers, dates). A span is a continuous phrase taken directly from the passage or question. In such questions, the answer spans are recommended to be five words. Questions with answer type "number", are expected to start with "How many". For instance, "How long did an event last?" can be phrased as "How many years did an event last?". To increase diversity, try to create more questions for which the answer will be multiple spans. Please create questions that require AT LEAST 2 arithmetic operations as illustrated in the 'positive examples' field. You are encouraged to try DIFFERENT COMBINATIONS of operations and not just limit to the combinations shown in those examples. The more challenging questions you create, the better it is.

Passage: In 2014, Pickett and Wilkinson were invited to Auckland and Dunedin to discuss the relevance of their research to New Zealand. They argued that as inequality in New Zealand has grown, there has been a dramatic increase in the youth suicides, although in contrast, recent Department of Health data shows that the age-standardised suicide rate decreased by 19.5% from the peak rate of 15.1 deaths per 100,000 population in 1998 to 12.2 deaths per 100,000 population in 2012. The proliferation of food banks increased dramatically; and the number of families and children living in poverty has increased. However serious crimes causing injury and death decreased by 20% between 2012 and 2014, whilst assaults decreased by 3% over the same period. At the same time, health care spending has increased. In 2011 Health spending accounted for 10% of GDP, higher than the OECD average of 9.3%. As in many OECD countries, health spending in New Zealand slowed down post the GFC but still reached 3% in real terms in 2010 and 2011 - higher than the OECD average. in 2012 New Zealand has 2.7 doctors per 1,000 population, and increase from 2.2 in the year 2000.
How many fewer suicides per 100000 people were there in 1998 over 2012?