12. The table below lists the real GDP/capita (in 2005$) for Australia, Cameroon, and Mexico from 1960-2000. Use this information to calculate the following: Australia Cameroon Mexico 1960 $12,003 $1,900 $4,421 1970 $16,646 $1,874 $6,169 1980 520,014 $2,798 $9,263 1990 $23,130 $2,710 $8,551 2000 $30,124 $2,446 $10,360 a. Calculate the growth rates in real GDP/capita from 1960-1970, 1970-1980, 1980-1990, and 1990-2000 for each country. b. For each country and decade, use the rule of 70 to figure out how long it would take for real GDP/capita to double at that growth rate. c. Assume the growth rates between 1990 and 2000 were to persist into the future. In what year would real GDP/capita be twice the level it was in 2000 for each country