For more effective results, search by domain address:
.gov .edu .org
site:.gov.hk (To search the HK government websites). For example, crime statistics site:.gov.hk will search all HK government websites, looking for crime statistics
site:.edu.hk (To search HK educational institutions). For example, criminology site:.edu.hk will search all Hong Kong educational websites, looking for criminology.
site:.imf.org (To search the IMF websites). For example trade statistics site:.imf.org will search all IMF websites, looking for trade statistics.
Spreadsheets (Excel files) usually contain numerical data and PowerPoint presentations may contain graphs or charts. To locate these files, search by file type (PowerPoint or Excel files)
Filetype:ppt (PowerPoint file)
Filetype:xls (Excel file)
Use the term "infographic" as one of your search terms when searching the web. It will look for charts and graphs.
For example: crime statistics Hong Kong infographic