Year	Percent
1950	8.69065
1955	8.61519
1960	9.832
1965	8.48467
1970	6.48044
1975	7.17386
1980	7.70113
1985	8.77079
1990	6.52242
1995	6.44127
2000	6.2665
2005	5.29464
2010	5.27179
2015	5.32347
2020	5.01937
2025	4.98584
2030	4.94913
2035	4.90878
2040	4.80485
2045	4.76095
2050	4.78096
2055	4.79269
2060	4.8114
2065	4.83577
2070	4.84208
2075	4.83336
2080	4.82869
2085	4.8354
2090	4.84381
2095	4.84305
2100	4.82929