Seeing as this question was asked in 2010, the United States experienced 1282 tornadoes in 2010. In the past year of 2011 there were at least 1660 tornadoes in the U.S. Statistics outside the U.S. are not available.
The U.S. had 1075 confirmed tornadoes in 2000.
There were 1075 confirmed tornadoes in the U.S. in 2000. Global statistics are apparently unavailable.
The number of tornadoes that occurred worldwide in 2012 is not known. The United States experienced 940 recorded tornadoes, making it a below-average year.
That is impossible to determine. The United States averages over 1000 tornadoes every year, many of them occurred before we started keeping records of them.
Tornadoes have occurred in Ohio this year as they do pretty much every year
There were 1,103 tornadoes in the U.S. in 2006.
There were 94 tornadoes in Alabama in 2008.
There were 105 tornadoes in Iowa in 2008.
15 tornadoes occurred in Michigan in 2011.
There were 20 tornadoes in Ohio in 2014.
There were 16 confirmed tornadoes in Arkansas in 2007.
There were 1,817 tornadoes recorded in the U.S. in 2004.