How much taller was Mt. Everest determined to be in 1999, than in 1852?

The Indian continental plate pushes against the Asian continental plate and the Himalayan mountain chain is pushed upward. This is the reason why Mt. Everest grows taller.

Under the plateau below the summit in 1994 was placed a GPS device that measures the height of the mountain.

It was concluded that the Mt. Everest grow about 4 mm every year. So, from 1852 till 1999 there are 147 years. Each year the mountain get taller for 4mm, so in 1999 Mt. Everest was 147*4 mm = 588mm taller than in 1852.

Mt. Everest is Earth 's highest mountain. Its peak is 8,848 meters high.

In 1852 its height was 29.002ft or 8.839m, while the measuring in 1999 said that it was 29.035ft or 8.850m. That means that it is taller by some 11 meters or 33 feet. That is because it keeps increasing its size since its positioned on such plates that hit each other.