The Company leases certain land, buildings and equipment under noncancellable operating leases that expire at various dates through 2036. The Company capitalizes all significant leases that qualify for capitalization, of which there were none at December 31, 2007. Many of the building leases obligate the Company to pay real estate taxes, insurance and certain maintenance costs, and contain multiple renewal provisions, exercisable at the Company’s option. Leases that contain predetermined fixed escalations of the minimum rentals are recognized in rental expense on a straight-line basis over the lease term. Cash or rent abatements received upon entering into certain operating leases are also recognized on a straight-line basis over the lease term.

49

At December 31, 2007, the approximate future minimum lease payments for all operating leases were as follows (in thousands of dollars):

Rent expense, including items under lease and items rented on a month-to-month basis, was $42.1 million, $33.4 million and $28.6 million for 2007, 2006 and 2005, respectively. These amounts are net of sublease income of $0.5 million, $0.5 million and $0.4 million for 2007, 2006 and 2005, respectively.

The Company leases certain land, buildings and equipment under noncancellable operating leases that expire at various dates through 2036. The Company capitalizes all significant leases that qualify for capitalization, of which there were none at December 31, 2007. Many of the building leases obligate the Company to pay real estate taxes, insurance and certain maintenance costs, and contain multiple renewal provisions, exercisable at the Company’s option. Leases that contain predetermined fixed escalations of the minimum rentals are recognized in rental expense on a straight-line basis over the lease term. Cash or rent abatements received upon entering into certain operating leases are also recognized on a straight-line basis over the lease term.

49

At December 31, 2007, the approximate future minimum lease payments for all operating leases were as follows (in thousands of dollars):

Rent expense, including items under lease and items rented on a month-to-month basis, was $42.1 million, $33.4 million and $28.6 million for 2007, 2006 and 2005, respectively. These amounts are net of sublease income of $0.5 million, $0.5 million and $0.4 million for 2007, 2006 and 2005, respectively.

The Company leases certain land, buildings, and equipment under noncancellable operating leases that expire at various dates through 2036. The Company capitalizes all significant leases that qualify for capitalization, of which there were none at December 31, 2006. Many of the building leases obligate the Company to pay real estate taxes, insurance and certain maintenance costs, and contain multiple renewal provisions, exercisable at the Company’s option. Leases that contain predetermined fixed escalations of the minimum rentals are recognized in rental expense on a straight-line basis over the lease term. Cash or rent abatements received upon entering into certain operating leases are also recognized on a straight-line basis over the lease term.

At December 31, 2006, the approximate future minimum lease payments for all operating leases were as follows (in thousands of dollars):

Rent expense, including items under lease and items rented on a month-to-month basis, was $33.4 million, $28.6 million and $22.3 million for 2006, 2005 and 2004, respectively. These amounts are net of sublease income of $0.5 million, $0.4 million and $0.5 million for 2006, 2005 and 2004, respectively.

The Company leases certain land, buildings, and equipment under noncancellable operating leases that expire at various dates through 2034. The Company capitalizes all significant leases that qualify for capitalization, of which there were none at December 31, 2005. Many of the building leases obligate the Company to pay real estate taxes, insurance and certain maintenance costs, and contain multiple renewal provisions, exercisable at the Company’s option. Leases that contain predetermined fixed escalations of the minimum rentals are recognized in rental expense on a straight-line basis over the lease term. Cash or rent abatements received upon entering into certain operating leases are also recognized on a straight-line basis over the lease term.

At December 31, 2005, the approximate future minimum lease payments for all operating leases were as follows (in thousands of dollars):

Rent expense, including items under lease and items rented on a month-to-month basis, was $28.6 million, $22.3 million and $19.5 million for 2005, 2004 and 2003, respectively. These amounts are net of sublease income of $0.4 million, $0.5 million and $0.5 million for 2005, 2004 and 2003, respectively.

The Company leases certain land, buildings and equipment. The Company capitalizes all significant leases that qualify for capitalization, of which there were none at December 31, 2004.

At December 31, 2004, the approximate future minimum lease payments for all operating leases were as follows (in thousands of dollars):

Total rent expense, including both items under lease and items rented on a month-to-month basis, was $22.3 million, $19.5 million and $18.8 million for 2004, 2003 and 2002, respectively. These amounts are net of sublease income of $0.5 million, $0.5 million and $0.4 million for 2004, 2003 and 2002, respectively.