Maybe the net worth change had something to do with NACCO spin off the material handling subsidiary (Hyster-Yale) in 2012 - here you can read all about it. http://www dot nacco.com/ - do that eliminate the xtra space thing and replace dot with a symbol.

Lot of people/companies net worth were good in 2007 but then the hoops came off the barrel (as in whiskey barrels) - aka the Great Recession in the US and around the world., exception oil related.

During my 41 year tenure in the lift truck industry - went thru 5 recessionary period from moderate to three very, very significant ones (71/72, 80/81 and 07/08) and a couple in between. This is my take as far as the US market goes - when things in the general economy start going south - the first two things to get budget reduced or eliminate are advertising and capital expenditures (lift truck are considered capital equipment) and short term rentals start coming home to roost goods. During the up turn things happen slowly as companies have a need but are cautious. But from a operating budget stand point capital expenditures and advertising are some of the last items that are significantly increased budget wise so they start buying used equipment ,generally, dealers short term rental fleet that have been roosting to long, once that after the good units are sold off and the marginal units remain, new equipment acquisition start to increase. Depending on the severity often recession there are less companies around - the Chapter 11/13 and Chapter 7 routine 11 and companies closed some plant or consolidated adn need less stuff & employees.