Occupations in 1998 with the highest percentage of workers aged 45 years and older. Occupation Percent Farmers, except hort. 68.5 Construction inspectors 60.6 Real estate sales 59.8 Public administrators 58.7 Clergy 56.9 Millwrights 56.6 Librarians 56.5 Education administrators 56.1 Total, all employees 33.7