Year	Percent
1950	8.08238
1955	7.78261
1960	8.55849
1965	9.65377
1970	9.66659
1975	9.16274
1980	9.7882
1985	9.08448
1990	10.12921
1995	10.10699
2000	9.35637
2005	7.3303
2010	6.11687
2015	5.90501
2020	6.63783
2025	7.3126
2030	7.0779
2035	6.32517
2040	5.63919
2045	5.40488
2050	5.59064
2055	5.89169
2060	6.00234
2065	5.84183
2070	5.5597
2075	5.36203
2080	5.33519
2085	5.4042
2090	5.46162
2095	5.42306
2100	5.30342