that the business vote is "complex, costly and has no clear public benefit." However, one supporter of the business vote has been Councillor Angela Vithoulkas: "Businesses and property owners pay over 72% of the rates [in the City of Sydney], they deserve to have a voice and exercise their democratic right." Policies, services and initiatives Environment The City of Sydney has adopted various policies to reduce the council's climate impact, including strategies implemented since the 2000s to reduce car pollution by investing in mass and public transit and introducing a fleet of 10 new Nissan Leaf electric cars, the largest order of the vehicle in Australia. The council has also invested in bicycle infrastructure, and cycling trips have increased by 113% across Sydney's inner-city since March 2010, with approximately 2,000 bikes passing through top peak-hour intersections on an average weekday. The City of Sydney became the first council in Australia to achieve formal certification as carbon-neutral in 2008. The city has reduced its 2007 carbon emissions by 6% and since 2006 has reduced carbon emissions from city buildings by up to 20%. In 2008, the council adopted the Sustainable Sydney 2030 programme, which outlined various energy targets, such as a comprehensive plan to reduce energy in homes and offices within Sydney by 30%. In the commercial space, reductions in energy consumption have decreased energy bills by $30 million a year in more than half of office spaces, and solar panels] have been installed on many CBD buildings in an effort to minimise carbon pollution by around 3,000 tonnes a year. Sydney has become a leader in the development of green office buildings and enforcing the requirement of all building proposals to be energy-efficient. The One Central Park development, completed in 2013, is an example of this implementation and design. Proposals to make all of Sydney's future buildings sustainable and environmentally friendly by using recycled water, rooftop gardens, efficient and renewable energy. Sydney Peace Prize The City of Sydney is a major supporter of the Sydney Peace Prize. Libraries Sister cities Sydney City Council maintains sister city relations with the following cities: San Francisco, California, United States, since 1968 Nagoya, Japan, since 1980 Wellington, New Zealand, since 1982 Portsmouth, England, United Kingdom, since 1984 Guangzhou, China, since 1986 Florence, Tuscany, Italy, since 1986 Friendship cities Paris, France, since 1998 Berlin, Germany, since 2000 Athens, Greece, since 2000 Dublin, Ireland, since 2002