Nevada lawmakers expressed frustration Thursday over the slow pace of developing a statewide database to track student achievement, an effort that has been decades in the making and has cost millions of dollars.During a meeting of a Senate and Assembly joint money subcommittee, Sen. Debbie Smith, D-Sparks, said she’s tired of hearing session after session, “we’re almost there.”“I keep wondering if I’m going to live long enough to really enjoy all the investment we’ve made in this system,” Smith said, saying the state has spent $42 million over time to make it happen.“I still want to be alive when we …