The given Bar Graph presents the Export of Tea and Coffee (in million kg) for the years 2012 to 2016.

The number of years, in each of which the export of coffee is more than 20% as compared to the export of tea in that year is:

2012

Percentage more = $$\frac{450-400}{400}\times\ 100$$

= $$\frac{50}{400}\times\ 100$$

= 12.5%

2013

Percentage more = $$\frac{470-350}{350}\times\ 100$$

= $$\frac{120}{350}\times\ 100$$

= 34.28%

2014

Percentage more = $$\frac{630-500}{500}\times\ 100$$

= $$\frac{130}{500}\times\ 100$$

= 26%
2015

Percentage more = $$\frac{500-420}{420}\times\ 100$$

= $$\frac{80}{420}\times\ 100$$

= 19.04%

2016

Percentage more = $$\frac{600-480}{480}\times\ 100$$

= $$\frac{120}{480}\times\ 100$$

= 25%

In three years(2013, 2014 and 2016),  the export of coffee is more than 20% as compared to the export of tea in that year.