Year	Percent
1950	7.5423
1955	7.41847
1960	8.9935
1965	9.98893
1970	9.86925
1975	8.52986
1980	7.70516
1985	7.56008
1990	7.83211
1995	8.04562
2000	7.21694
2005	5.35211
2010	4.85196
2015	5.73467
2020	6.43463
2025	5.94649
2030	5.43021
2035	5.10592
2040	5.09356
2045	5.28744
2050	5.43754
2055	5.35965
2060	5.13328
2065	4.95847
2070	4.94045
2075	5.03103
2080	5.10648
2085	5.07277
2090	4.935
2095	4.79521
2100	4.7359