Write the correct prepositions to fill in the gaps. There are three extra prepositions you do not need to use.

1. The bar chart illustrates numbers ... male and female engineering students in 1992, 2002 and 2012.
2. The number of male students fell quite significantly ... 1992 and 2002.
3. The number of female students was half the number of male students ... 2012.

4. ... contrast, the number of female students rose constantly.
5. Between 2002 and 2012, the number of female engineering students rose ... 4,000 ... 6,000.