Question 10

From the bar chart, read the values of Exports ($E$) and Imports ($I$) in crores of Rupees for each year, and compute their sum $T = E + I$:

• 2000: $E = 50, I = 40 \implies T_{2000} = 90$
• 2001: $E = 60, I = 50 \implies T_{2001} = 110$
• 2002: $E = 70, I = 60 \implies T_{2002} = 130$
• 2003: $E = 60, I = 70 \implies T_{2003} = 130$
• 2004: $E = 70, I = 80 \implies T_{2004} = 150$
• 2005: $E = 70, I = 90 \implies T_{2005} = 160$
• 2006: $E = 100, I = 120 \implies T_{2006} = 220$
• 2007: $E = 110, I = 120 \implies T_{2007} = 230$

Calculate the year-on-year combined percentage increase $\frac{T_{\text{curr}} - T_{\text{prev}}}{T_{\text{prev}}} \times 100\%$:

• 2001: $\frac{110 - 90}{90} \times 100\% = \frac{20}{90} \times 100\% \approx 22.22\%$
• 2002: $\frac{130 - 110}{110} \times 100\% = \frac{20}{110} \times 100\% \approx 18.18\%$
• 2003: $\frac{130 - 130}{130} \times 100\% = 0\%$
• 2004: $\frac{150 - 130}{130} \times 100\% = \frac{20}{130} \times 100\% \approx 15.38\%$
• 2005: $\frac{160 - 150}{150} \times 100\% = \frac{10}{150} \times 100\% \approx 6.67\%$
• 2006: $\frac{220 - 160}{160} \times 100\% = \frac{60}{160} \times 100\% = 37.50\%$
• 2007: $\frac{230 - 220}{220} \times 100\% = \frac{10}{220} \times 100\% \approx 4.55\%$

The combined percentage increase is highest in the year 2006 ($37.50\%$).