Year	Percent
1950	8.55331
1955	7.1539
1960	6.76217
1965	6.97597
1970	7.02147
1975	6.51468
1980	5.66887
1985	5.43607
1990	6.21087
1995	6.4784
2000	5.02851
2005	5.24809
2010	5.72972
2015	5.85448
2020	5.97112
2025	5.90863
2030	5.63057
2035	5.41104
2040	5.43382
2045	5.54877
2050	5.61009
2055	5.58558
2060	5.48778
2065	5.3728
2070	5.30902
2075	5.3051
2080	5.31645
2085	5.29848
2090	5.23823
2095	5.15126
2100	5.07406