Year	Percent
1950	10.25435
1955	8.6042
1960	7.58481
1965	8.20118
1970	7.8497
1975	8.76588
1980	8.73719
1985	8.39094
1990	8.66935
1995	6.82649
2000	8.05699
2005	6.88265
2010	6.50582
2015	5.54437
2020	5.47016
2025	6.17943
2030	6.47895
2035	6.44203
2040	5.79148
2045	5.46039
2050	5.42908
2055	5.50131
2060	5.59995
2065	5.59512
2070	5.46369
2075	5.30993
2080	5.23826
2085	5.24581
2090	5.27548
2095	5.2707
2100	5.22033